Cozy Stuffed Pepper Soup: Easy, Delicious Slow Cooker Recipe

Cozy stuffed pepper soup brings the familiar flavor of stuffed bell peppers to the table with less preparation and no need to bake individual peppers. Ground beef, rice, tomatoes, broth, and sweet peppers simmer together in a slow cooker until the vegetables are tender and the flavors are well blended. It is a practical cold-weather meal that can be assembled in the morning and served at dinner. For a comparable slow-cooker approach, see this slow cooker stuffed pepper soup guide.

Essential Concepts

• Brown the ground beef before adding it to the slow cooker.
• Use uncooked long-grain rice for the best texture.
• Add the rice during the final hour so it does not become mushy.
• Cook until the beef reaches 160°F (71°C) and the rice is tender.
• Refrigerate leftovers within two hours.

Why This Soup Works

Traditional stuffed peppers require cooking the filling, preparing the peppers, stuffing them, and baking everything in a dish. Soup simplifies those steps without losing the defining ingredients. The peppers provide sweetness, the tomatoes add acidity, and the beef contributes savory depth. Rice absorbs some of the broth and gives the soup a satisfying texture. If you enjoy the same beef-and-rice combination in a baked dish, try this ground beef and rice casserole.

A slow cooker is well suited to this recipe because gentle heat softens the peppers and allows the seasonings to spread through the broth. Browning the beef first is recommended because it improves flavor and removes excess fat. Although the soup can be made with raw ground beef, the result is usually less clean-tasting and may contain more grease.

Ingredients

Serves 6 to 8.

• 1 pound ground beef, 454 grams
• 1 medium yellow onion, diced, about 1 cup or 150 grams
• 3 bell peppers, diced, about 3 cups or 450 grams
• 3 cloves garlic, minced
• 1 can diced tomatoes, 14.5 ounces or 411 grams, undrained
• 1 can tomato sauce, 15 ounces or 425 grams
• 4 cups beef broth, 32 fluid ounces or 950 milliliters
• 1 cup uncooked long-grain white rice, 185 grams
• 2 tablespoons tomato paste, 30 grams
• 1 teaspoon Italian seasoning, 3 grams
• 1 teaspoon paprika, 2 grams
• 1 teaspoon kosher salt, or to taste
• ½ teaspoon black pepper, 1 gram
• 1 tablespoon Worcestershire sauce, 15 milliliters
• 1 bay leaf
• 1 tablespoon chopped fresh parsley, optional

For serving:

• Shredded cheddar or Monterey Jack cheese
• Sour cream
• Chopped parsley or green onions
• Crusty bread

Instructions

1. Heat a large skillet over medium heat. Add the ground beef and cook for 6 to 8 minutes, breaking it into small pieces, until no pink remains. Drain excess fat.
   
2. 
   

   Add the onion and cook for 3 to 4 minutes, until it begins to soften. Stir in the garlic and cook for 30 seconds.

   
   
3. 
   

   Transfer the beef mixture to a 6-quart slow cooker. Add the diced bell peppers, diced tomatoes, tomato sauce, beef broth, tomato paste, Italian seasoning, paprika, salt, black pepper, Worcestershire sauce, and bay leaf. Stir well.

   
   
4. 
   

   Cover and cook on low for 6 to 7 hours or on high for 3 to 4 hours. The peppers should be tender and the soup should be hot throughout.

   
   
5. 
   

   Stir in the uncooked rice during the final 45 to 60 minutes of cooking. Cover and continue cooking until the rice is tender. Check the soup several times during this stage because rice absorbs liquid quickly.

   
   
6. 
   

   Remove the bay leaf. Taste and adjust the salt and pepper. Stir in the parsley, if using.

   
   
7. 
   

   Ladle the soup into bowls and top with cheese, sour cream, or green onions. Serve with bread if desired.

   
   

Cooking Tips for Better Texture

Use long-grain white rice rather than instant rice. Long-grain rice holds its shape better during slow cooking, while instant rice can become soft before the soup is ready. Brown rice requires more liquid and a longer cooking time, so it should not be substituted without adjusting the recipe.

The size of the pepper pieces also affects the finished dish. Pieces measuring about ½ inch are small enough to fit easily on a spoon but large enough to retain some texture. Red, yellow, and orange peppers produce a sweeter soup. Green peppers provide a sharper, more savory flavor. A combination gives the soup greater depth.

The soup thickens as it cools because the rice continues to absorb broth. For a thinner consistency, add ½ to 1 cup of warm beef broth before serving. If the soup becomes too thin, leave the slow cooker uncovered for a short period after the rice is cooked, or stir in a small amount of additional tomato paste.

Storage and Reheating

Cool the soup promptly and refrigerate it in a covered container for up to four days. Rice-based soups are best stored in individual portions because the rice continues to absorb liquid while chilled. Add a splash of broth or water before reheating.

Reheat one portion in the microwave in 60- to 90-second intervals, stirring between intervals, until it reaches 165°F (74°C). On the stovetop, warm the soup over medium-low heat and stir often. Frozen portions can be stored for up to three months, although the rice may soften after thawing. For the best texture, prepare the soup without rice, freeze it, and add freshly cooked rice during reheating.

Useful Variations

Ground turkey or chicken can replace the beef. Since poultry is leaner, add a teaspoon of olive oil when cooking the onion if the skillet seems dry. Vegetable broth and cooked lentils can replace the beef for a meatless version.

For extra heat, add ¼ teaspoon of red pepper flakes or one diced jalapeño. A small amount of smoked paprika adds a deeper flavor. To make the soup creamier, stir in ½ cup of heavy cream after cooking, though this changes the traditional tomato-based character.

Frequently Asked Questions

Can I put raw ground beef in the slow cooker?

Yes, but browning it first produces better flavor and reduces excess fat. If raw beef is used, break it into small pieces and confirm that it reaches 160°F (71°C) before serving.

Can I add the rice at the beginning?

It is possible, but the rice may become overly soft during a full day of slow cooking. Adding it during the final hour generally gives better results.

Why is my soup too thick?

The rice has probably absorbed more broth than expected. Stir in warm broth or water until the desired consistency is reached. Add liquid gradually so the soup does not become watery.

Can I use cooked rice?

Yes. Stir 2 to 3 cups of cooked rice into the finished soup and heat for 10 to 15 minutes. This method is useful when preparing the soup ahead of time.

What type of peppers works best?

Any sweet bell pepper works well. Red, orange, and yellow peppers create a sweeter flavor, while green peppers provide a more pronounced savory taste. Using several colors is optional and does not change the cooking method.

Can I make this soup without a slow cooker?

Yes. Prepare the beef and onion in a large pot, add all ingredients except the rice, and simmer for about 25 minutes. Stir in the rice and cook for another 18 to 20 minutes, or until tender. Check the pot regularly and add broth as needed.