Can You Put Sauces in a Slow Cooker?

Yes, you can absolutely put sauces in a slow cooker! Slow cookers are perfect for simmering sauces like spaghetti sauce , marinara, or even cream-based sauces. The gentle, even heat allows the flavors to meld beautifully over time, creating a rich and deep taste. Just include you don’t fill the slow cooker more than two-thirds full to prevent spills and allow room for the sauce to thicken.

What is the One Ingredient That Makes Spaghetti Sauce So Much Better?

The secret ingredient? Sugar! A small pinch of sugar balances the acidity of the tomatoes and increases the sauce's natural sweetness. Other options like a splash of balsamic vinegar or red wine can also add depth and complexity, elevating your slow cooker spaghetti sauce from good to great.

How Long Can You Cook Sauce in a Crockpot?

You can cook sauce in a crockpot on low for 6-8 hours or on high for 3-5 hours . Cooking longer on low heat is ideal for developing a deeper flavor, especially for tomato-based sauces. Be mindful not to overcook cream or dairy-based sauces, as they may curdle if left too long.

Will Spaghetti Sauce Thicken in the Crockpot?

Yes, spaghetti sauce will thicken in the crockpot, but it may need a little help. Leave the lid slightly ajar during the last hour of cooking to let excess moisture evaporate. You can also add tomato paste, grated carrots, or cornstarch slurry for a thicker consistency.

Slow Cooker Spaghetti Sauce - Easy & Flavorful Recipe Guide

Name: Slow Cooker Spaghetti Sauce
Prep time: 15 min
Cook time: 6 h
Total time: 6 h 15 min
Cuisine: Italian
Ingredients: 2 cans (28 oz each) crushed tomatoes; 1 can (6 oz) tomato paste; 1 lb ground beef or Italian sausage (optional); 1 onion, finely chopped; 3 garlic cloves, minced; 1 carrot, grated; 1 celery stalk, chopped; 2 tsp dried basil; 1 tsp dried oregano; 1 tsp salt; 1/2 tsp black pepper; 1 tsp sugar; 1 tbsp olive oil; 1/4 cup red wine or 1 tbsp balsamic vinegar (optional); Fresh parsley or basil for garnish

Description

This hearty slow cooker spaghetti sauce is rich, flavorful, and incredibly easy to make. Let your slow cooker do the work while you enjoy a thick, aromatic sauce perfect for pasta nights!

Ingredients

2 cans (28 oz each) crushed tomatoes
1 can (6 oz) tomato paste
1 lb ground beef or Italian sausage (optional)
1 onion, finely chopped
3 garlic cloves, minced
1 carrot, grated
1 celery stalk, chopped
2 tsp dried basil
1 tsp dried oregano
1 tsp salt
1/2 tsp black pepper
1 tsp sugar
1 tbsp olive oil
1/4 cup red wine or 1 tbsp balsamic vinegar (optional)
Fresh parsley or basil for garnish

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Instructions

In a skillet, heat olive oil over medium heat. Brown the ground beef or sausage until cooked through. Drain excess fat.
Add chopped onion, garlic, carrot, and celery. Sauté for 3–4 minutes until softened and fragrant.
Transfer the cooked mixture to your slow cooker.
Add crushed tomatoes, tomato paste, herbs, sugar, salt, pepper, and wine or vinegar if using. Stir gently to combine.
Cover and cook on LOW for 6–8 hours or HIGH for 3–5 hours, stirring once or twice during cooking.
For a thicker sauce, remove the lid during the last hour to let excess moisture evaporate.
Taste and adjust seasoning before serving. Garnish with fresh basil or parsley.
Serve over pasta, use as a lasagna sauce, or spread over pizza dough.

Notes

This sauce freezes beautifully—store in airtight containers for up to 3 months. For a vegetarian version, skip the meat and add mushrooms or lentils. Add a pinch of red pepper flakes for a spicy kick.

Prep Time: 15 minutes
Cook Time: 6 hours
Category: Sauce
Method: Slow Cooker
Cuisine: Italian