I would’ve liked to have made this slow cooker tomato sauce using tomatoes from our garden. For some reason, our tomatoes just didn’t produce this year. Usually I have to worry about the raccoons stealing them but not this time. They just didn’t come out. So, Plan B, I picked up a big batch of ripe tomatoes at the grocery store. The end result came out very, very flavorful. Quite honestly, I had my sights set on using this sauce to make pizza sauce, but it’s so good by itself you could easily serve it as-is as tomato soup.

Use Ripe Tomatoes Only
I used Roma tomatoes because I like how they taste. You can substitute any good tomato, just make sure they’re good and ripe. Do not use those hard-as-cardboard tomatoes you often find at your grocery store. If you’re lucky enough to be near a farmer’s market, it’s well worth the trip. When tomatoes are at peak you’ll want to make several batches of this slow cooker tomato sauce and freeze it for later.
- Generous Capacity: 7-quart slow cooker that…
- Cooking Flexibility: High or low slow cooking…
Also try my roasted tomato sauce.
Slow Cooker Tomato Sauce
Equipment
Ingredients
- 5-6 pounds Roma tomatoes
- 3 cloves garlic minced
- 1 medium sweet onion chopped
- 1 medium carrot chopped
- 2 tablespoons extra virgin olive oil
- 1 bay leaf
- 2 tablespoons fresh parsley chopped
- 1 teaspoon dried basil
- ½ teaspoon dried oregano
- ½ teaspoon dried thyme
- ¼ teaspoon dried rosemary
- 1 pinch red pepper flakes
- Kosher salt to taste
- freshly ground black pepper to taste
- Honey or sugar, optional
Instructions
- Rinse tomatoes and cut in half. Place into a large slow cooker.
- Add the garlic, onion, carrot, oil, bay leaf and parsley.
- Lightly grind the basil, oregano, thyme, rosemary and pepper flakes using a mortar and pestle. Add to the slow cooker.
- Cook on low for 4-6 hours or until the tomatoes have softened, stirring occasionally.
- Let cool for 30 minutes.
- Working in batches, transfer the tomato mixture to a blender or food processor and process until smooth.
- Transfer the pureed liquid to a strainer and remove the pulp, seeds, etc, leaving the tomato sauce.
- If the sauce is too thin you can slowly simmer it in a sauce pan on the stove until thick.
- Add honey or sugar to sweeten the sauce if desired.
Notes
Nutrition
Nutritional values are approximate.
- Package Includes: Six (6) Reynolds Kitchens Slow…
- Easy Cleanup: These strong, reliable slow cooker…





