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Crockpot Roasted Vegetable Sauce

June 21, 2018 by Lindsay 61 Comments

Hi Friends!

Today I have a fun sauce recipe to share with you. Crockpot Roasted Vegetable Tomato Sauce.

An easy way to add some extra vegetables to your meal, this Crockpot Roasted Veggie Tomato Sauce is super simple and easy to customize based on what you have on hand.

Let’s talk about spaghetti sauce for a minute. I love it…I don’t love how much salt is usually in it. A few years ago I started buying no-salt-added crushed tomatoes and adding my own garlic and herbs to make spaghetti sauce. It’s super easy and much healthier!

Another one of my favorite tricks for making sauce healthier is to add extra veggies. Usually I just chop them up, saute them and mix them into my sauce with some lentils and then serve over noodles. This weekend, however, I was in the mood for a less chunky sauce. So I turned to my crockpot.

An easy way to add some extra vegetables to your meal, this Crockpot Roasted Veggie Tomato Sauce is super simple and easy to customize based on what you have on hand.

Let’s back up a minute. Did you know you can roast veggies in your crockpot? It’s so easy. Just chop up some veggies of your choice, toss lightly with olive oil and spices of your choice and roast in the crockpot on high for 3-4 hours or on low for longer. The veggies will get a little softer than when you roast them in the oven and not as “blackened”, but the flavor is still great. I still have a slight preference for oven roasted veggies…but using the crockpot is a fun way to change it up.

Ok, moving on. I decided to use some crockpot roasted veggies to kick my spaghetti sauce up a notch. Here’s what I did:

  • Chopped up some veggies I had on hand and some garlic.
  • Tossed in olive oil and roasted in the crockpot on high for 3 hours, stirring every hour.
  • Added 2- 28oz can of whole  tomatoes, one with liquid and one drained (you could also use 4- 14.5 oz cans of no salt added diced tomatoes, or even crushed)
  • Pureed the mixture using my immersion blender.
  • Added some spices and fresh herbs.
  • Let simmer for a couple more hours.

Voila! Roasted Veggie Sauce. The best part is you can freeze this sauce….so use some now and freeze the rest. When you need more, just pull it out and defrost it! There isn’t an exact recipe for this sauce but here’s the general idea:

Print

Crockpot Roasted Vegetable Sauce

crockpot roasted vegetable tomato sauce1
Print Recipe

This sauce is a cinch to make and a great way to sneak more veggies into your diet. Enjoy some today and freeze the rest for tomorrow!

  • Author: Author: Lindsay L
  • Prep Time: 5 minutes
  • Cook Time: 5 hours
  • Total Time: 5 hours 5 minutes
  • Yield: 6-8 1x

Ingredients

Scale
  • 2–3 cups chopped vegetables
  • 2 28-oz cans whole tomatoes
  • 2–3 tsp oregano
  • 2 Tbsp fresh basil
  • 3–4 cloves garlic, minced

Instructions

  1. Peel and roughly chop the vegetables. Use whatever you have on hand. I used a sweet potato, a red pepper, 2 leeks, a handful of mushrooms and 3-4 carrots.
  2. Toss lightly in olive oil and add to the crockpot with the garlic.
  3. Roast on high for 3-4 hours or until soft, stirring every hour.
  4. Add one can of tomatoes with liquid, the drain the second can and add it without the liquid.
  5. Use an immersion blender or transfer to a blender and puree until smooth.
  6. Add spices (adjust to your tastebuds- add parsley or other italian seasonings if desired).
  7. Let simmer 1-2 hours more on warm.
  8. Store in an airtight container in the fridge or freeze.

Did you make this recipe?

Tag @theleangreenbean on Instagram

 

You won’t outright taste the veggies, but it’s awesome knowing that they’re in there…and I think it adds a nice flavor to the sauce if you’re looking for it. Try to find no-salt-added tomatoes if you can! If you can’t, look at several brands to find the one with the lowest amount, and rinse off the tomatoes from the can you drain the liquid from!

crockpot roasted vegetable sauce

Serve this sauce over noodles or spaghetti sauce and add your favorite protein. I usually add lentils or white beans…but you could also add chicken or ground turkey.  And if you’re feeling extra “saucy”, add a dollop of pesto for some extra flavor!

An easy way to add some extra vegetables to your meal, this Crockpot Roasted Veggie Tomato Sauce is super simple and easy to customize based on what you have on hand.

Let’s chat: Do you add extra veggies to your sauce?

Enjoy!
–Lindsay–

 

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Filed Under: Dinner, Food Prep, Side Dish, Slow Cooker

About Lindsay

Lindsay Livingston is a Registered Dietitian and new mom from Columbus, Ohio. On her blog, she shares simple, healthy recipes, nutrition tips, workouts and snapshots of her life. Follow her on Twitter @LeanGrnBeanBlog and Instagram @TheLeanGreenBean and be sure to subscribe via RSS or email so you never miss a post!

Reader Interactions

Comments

  1. Katie @ Talk Less, Say More says

    March 26, 2013 at 5:29 AM

    What a great idea! Plus it looks super tasty and I’m sure tastes just as good, if not BETTER than the jarred stuff!

    Reply
    • Lindsay says

      March 28, 2013 at 9:47 AM

      definitely better, in my opinion 🙂

      Reply
  2. Linz @ Itz Linz says

    March 26, 2013 at 6:24 AM

    i love sneaking in veggies – there’s no reason not to! it bulks up the sauce and adds nutrition!!

    Reply
  3. Kristina @Run and Assimilate says

    March 26, 2013 at 6:59 AM

    Oh my goodness, that looks so good!

    Reply
  4. The Candid RD says

    March 26, 2013 at 7:12 AM

    Sounds wonderful. I actually have to do what you said, and mix no-salt added crushed tomatoes with my own spices, in order to have a sauce without garlic and onion! I don’t mind it (I add garlic olive oil).

    Reply
  5. Michelle @ Eat Move Balance says

    March 26, 2013 at 7:27 AM

    I’ve never thought to roast veggies in a crockpot. Great tip–thanks! I agree that making your own sauce is the way to go. Not only for the salt content, but some companies add sugar (or HFCS) as well. Why is that necessary? Annoying.

    Reply
    • Lindsay says

      March 28, 2013 at 9:46 AM

      i know!! SO annoying!

      Reply
  6. Maureen says

    March 26, 2013 at 8:28 AM

    Looks delicious! I add veggies to everything! I love adding sauteed, chopped eggplant to spaghetti sauce as a meat substitute. 🙂

    Reply
  7. Millie Jones says

    March 26, 2013 at 8:42 AM

    I feel like spaghetti is one of the easiest ways to add veggies!!! It helps bulk up the meal and adds great nutrients. I love adding veggies to lasagna and I even like to switch out crumbled tofu for the ricotta! Another wonderful swap!

    Reply
    • Lindsay says

      March 28, 2013 at 9:46 AM

      yes! i’ve made tofu stuffed shells before! so good!

      Reply
  8. Christine @ Love, Life, Surf says

    March 26, 2013 at 8:46 AM

    I too never thought of roasting veggies in a crockpot! Genius! Thanks for this.

    Reply
    • Lindsay says

      March 28, 2013 at 9:46 AM

      you’re quite welcome 🙂

      Reply
  9. Heather (Where's the Beach) says

    March 26, 2013 at 9:09 AM

    Oh smart idea on the crockpot. Duh, never thought to do that even though I simmer my sauce for hours. LOL

    Reply
    • Lindsay says

      March 28, 2013 at 9:46 AM

      haha 🙂 def give the crockpot a try!

      Reply
  10. [email protected] says

    March 26, 2013 at 9:21 AM

    I love making my own sauce! Thanks for the inspiration!

    Reply
    • Lindsay says

      March 28, 2013 at 9:45 AM

      woohoo! homemade for the win!

      Reply
  11. Ja @Athlete Within Ja says

    March 26, 2013 at 9:53 AM

    I love Crock Pot recipes. I love to use my Crock Pot, they make my life so easy! That looks good!!!Thanks for sharing this recipe! 🙂

    Reply
    • Lindsay says

      March 28, 2013 at 9:45 AM

      you’re welcome! hope you like it!

      Reply
  12. Haley @ fullnfit says

    March 26, 2013 at 10:46 AM

    This looks yummy & anything in the crockpot is worth trying because it’s so darn easy!

    Reply
    • Lindsay says

      March 28, 2013 at 9:44 AM

      my sentiments exactly!

      Reply
  13. Alysia @ Slim Sanity says

    March 26, 2013 at 10:50 AM

    I love making my own tomato sauce! I almost always prefer it ‘chunkier’ though. I haven’t bought canned tomato sauce like Prego in ages

    Reply
    • Lindsay says

      March 28, 2013 at 9:44 AM

      nice! i’m a fan of smooth sauce but every once and a while chunky is good!

      Reply
  14. Helen says

    March 26, 2013 at 11:06 AM

    What a great idea, Lindsay! This looks delish! It’s a great way to sneak in some veggies. =)

    Reply
  15. Moni Meals & Fitness says

    March 26, 2013 at 11:25 AM

    You rule Lindsay! We both shared and created to very awesome spaghetti squash meals this week. How funny! Good to now great minds think alike. I can’t wait to try yours. I love how you made your sauce!! xx

    Reply
    • Lindsay says

      March 28, 2013 at 9:43 AM

      told you we were on the same wavelength!!

      Reply
  16. Kelly @ Cupcake Kelly's says

    March 26, 2013 at 11:38 AM

    What a great idea, I am always looking for new ways to use my crockpot! Thanks 🙂

    Reply
    • Lindsay says

      March 28, 2013 at 9:41 AM

      you’re welcome! love my crockpot!

      Reply
  17. Leigha says

    March 26, 2013 at 11:55 AM

    Yum! I definitely want to use my crock pot more. So many easy recipes! I’ve never made my own sauce but it seems super simple! I’ve got a spaghetti squash waiting to be tried!

    Reply
    • Lindsay says

      March 28, 2013 at 9:40 AM

      perfect time to give it a go!

      Reply
  18. GiGi Eats Celebrities says

    March 26, 2013 at 12:15 PM

    Just went to heaven for a little bit… Your Tomato Sauce was there 😀

    Reply
  19. Alexis @ Hummusapien says

    March 26, 2013 at 12:24 PM

    I think you may just be better at sneaking in veggies than anyone I know! This sauce looks fab 🙂

    Reply
    • Lindsay says

      March 28, 2013 at 9:39 AM

      thanks girl 🙂 i do my best!

      Reply
  20. [email protected] says

    March 26, 2013 at 12:50 PM

    This looks awesome and the perfect way to get my kids to eat more vegetables 🙂

    Reply
    • Lindsay says

      March 28, 2013 at 9:39 AM

      yes! very kid friendly 🙂

      Reply
  21. misszippy says

    March 26, 2013 at 12:55 PM

    Stomach is growling…looks so good and there are so many ways to use something like this!

    [WORDPRESS HASHCASH] The poster sent us ‘0 which is not a hashcash value.

    Reply
    • Lindsay says

      March 28, 2013 at 9:39 AM

      the possibilities are endless!

      Reply
  22. Becky @ Olives n Wine says

    March 26, 2013 at 1:14 PM

    This looks awesome! I never knew you could roast veggies in a crockpot either! I love making my own pasta sauce, although I’ve never done it in a crockpot before.

    Reply
    • Lindsay says

      March 28, 2013 at 9:39 AM

      yep! super easy 🙂

      Reply
  23. Lindsay @ Live. Love. Nutrition. says

    March 26, 2013 at 1:19 PM

    Adding this to my list of recipes to try! Sounds delicious – I love adding veggies into sauces, it adds flavor and nutrition – win!

    Reply
    • Lindsay says

      March 28, 2013 at 9:39 AM

      that’s exactly how i feel 😉

      Reply
  24. Tanya says

    March 26, 2013 at 1:25 PM

    That looks so tasty! and healthy to!!

    Reply
  25. jobo says

    March 26, 2013 at 1:31 PM

    I LOVE homemade sauce, and the crockpot is a great idea! Totally pinning this! Had no idea about roasting veggies in the crock too! no liquid? does it make them burn??

    Reply
    • Lindsay says

      March 28, 2013 at 9:38 AM

      they might burn if you didn’t stir them…but the veggies release their moisture while they’re in there so there actually ends up being some liquid in there which helps them not burn!

      Reply
  26. Morganne @ Nut Butter Runner says

    March 26, 2013 at 2:21 PM

    I always add veggies to my sauce! They add so much more flavor, nutrients, and make it more hearty! 🙂

    Reply
    • Lindsay says

      March 28, 2013 at 9:38 AM

      exactly! only way to do it!

      Reply
  27. Ari @ Ari's Menu says

    March 26, 2013 at 2:45 PM

    Lindsay, this looks great! What an awesome way to get in extra veggies, and add some flavor to the sauce. I love the taste of roasted veggies, and I bet it makes the sauce extra delicious!

    Reply
    • Lindsay says

      March 28, 2013 at 9:37 AM

      it definitely adds a special taste to the plain old sauce! i love it!

      Reply
  28. Kelly @ Nosh And Nourish says

    March 26, 2013 at 2:53 PM

    I love this idea…and am ALL ABOUT more veggies! Will be trying this stat – to top my spaghetti squash with 🙂

    Reply
    • Lindsay says

      March 28, 2013 at 9:37 AM

      yes! it’s the perfect combo! hope you like it!

      Reply
  29. kristi says

    March 26, 2013 at 4:34 PM

    I love this and I can’t wait to try it. I already add purreed carrots to my spaghetti courtesy of Giada de Lerentis. So, I am so in to adding all this other stuff. Plus, one time I added eggplant. It was yummy.

    Reply
    • Lindsay says

      March 28, 2013 at 9:37 AM

      oooh that sounds delicious!

      Reply
  30. Megan @ The Delightfull Dash says

    March 26, 2013 at 6:02 PM

    Why have I never thought of this before?! This is awesome. Thanks so much for sharing. Making this ASAP!! 🙂

    Reply
    • Lindsay says

      March 28, 2013 at 9:36 AM

      let me know how it turns out!

      Reply
  31. Sarah @ The Smart Kitchen says

    March 27, 2013 at 9:16 PM

    I LOVE adding tons of veggies to my tomato sauces, especially because I love super think and chunky sauce.

    I had no idea you could ‘roast’ veggies in a slow cooker. Not that I’ve ever USED my slow cooker…

    Reply
    • Lindsay says

      March 28, 2013 at 9:27 AM

      get on it, girl! love mine!

      Reply
  32. Nutmeg Nanny says

    March 28, 2013 at 12:27 PM

    Beautiful sauce. What great way to add nutrients and extra flavor!

    Reply

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I'm a Registered Dietitian and mom of three from Columbus, Ohio. I use this blog to share simple, healthy recipes, nutrition tips, and an honest glimpse of motherhood!

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