There are stuffed peppers that require individual assembly, and then there is slow cooker stuffed pepper soup—the kind of hearty, comforting, deeply satisfying meal that gives you all the flavors of classic stuffed peppers without the tedious work. This soup combines ground beef, bell peppers, onions, rice, and a rich tomato broth, all slow-cooked to perfection. It tastes just like stuffed peppers in a bowl.
The beauty of this recipe is its simplicity. No coring, no stuffing, no baking. You simply brown the beef, chop the peppers, and let the slow cooker do the rest. The rice cooks right in the soup, absorbing all the savory flavors. The result is a thick, hearty, vegetable-packed soup that is a complete meal in itself.
This slow cooker stuffed pepper soup is perfect for busy weeknights, for meal prep, or for any time you crave a warm, comforting, old-fashioned meal. It is also budget-friendly, freezer-friendly, and endlessly customizable.
Why You Will Love This Slow Cooker Stuffed Pepper Soup
· All the flavors of stuffed peppers: Without the work.
· Hearty, thick, and satisfying: A complete meal in a bowl.
· Hands-off cooking: The slow cooker does all the work.
· Great for meal prep: Tastes even better the next day.
· Budget-friendly: Uses affordable ground beef and bell peppers.
· Freezer-friendly: Make a double batch and save one for later.
· Customizable: Use ground turkey, add different vegetables, or make it spicy.
Ingredients
Here is everything you need for slow cooker stuffed pepper soup:
For the Soup Base:
· 1½ pounds lean ground beef (85/15 or 90/10)
· 1 small yellow onion, diced
· 3 cloves garlic, minced
· 3 bell peppers (red, green, and yellow), diced
· 4 cups low-sodium beef broth
· 2 cans (15 ounces each) diced tomatoes, undrained
· 1 can (15 ounces) tomato sauce
· 2 tablespoons tomato paste
· 1 teaspoon dried oregano
· 1 teaspoon dried basil
· ½ teaspoon salt (adjust to taste)
· ¼ teaspoon black pepper
· ½ teaspoon red pepper flakes (optional, for heat)
For the Rice:
· 1 cup uncooked long-grain white rice (or brown rice—see note)
For Garnish:
· Fresh parsley or basil, chopped
· Shredded cheddar cheese (optional)
· Sour cream (optional)
Step-by-Step Instructions
Step 1: Brown the Ground Beef
Heat a large skillet over medium-high heat. Add the ground beef and cook, breaking it apart with a wooden spoon, until browned and no longer pink, about 5 to 7 minutes. Add the diced onion and cook for 2 to 3 minutes until softened. Add the minced garlic and cook for 30 seconds. Drain excess fat.
Step 2: Transfer to Slow Cooker
Transfer the browned beef mixture to a 6-quart or larger slow cooker.
Step 3: Add the Vegetables and Liquids
Add the diced bell peppers, beef broth, diced tomatoes (with their juices), tomato sauce, tomato paste, oregano, basil, salt, pepper, and red pepper flakes (if using). Stir to combine.
Step 4: Slow Cook (Without Rice)
Cover and cook on LOW for 6 to 8 hours or on HIGH for 3 to 4 hours.
Step 5: Add the Rice
About 30 to 40 minutes before serving, stir in the uncooked rice. Cover and cook on HIGH until the rice is tender (about 30 minutes for white rice, 45 to 60 minutes for brown rice).
Step 6: Serve
Ladle the soup into bowls. Garnish with fresh parsley, shredded cheddar cheese, or a dollop of sour cream if desired.
Stovetop Method (Faster)
Step 1: Brown the Beef
Follow step 1 above in a large Dutch oven or stockpot.
Step 2: Add Remaining Ingredients
Add the bell peppers, beef broth, diced tomatoes, tomato sauce, tomato paste, and seasonings. Bring to a boil.
Step 3: Simmer
Reduce the heat to low, cover, and simmer for 20 minutes.
Step 4: Add Rice
Stir in the rice, cover, and simmer for another 15 to 20 minutes, until the rice is tender.
Step 5: Serve
Serve hot.
Instant Pot Method
Step 1: Sauté
Use the sauté function to brown the beef, onion, and garlic. Drain excess fat.
Step 2: Pressure Cook
Add the bell peppers, broth, diced tomatoes, tomato sauce, tomato paste, and seasonings. Do not add the rice yet. Pressure cook on HIGH for 15 minutes. Quick release.
Step 3: Add Rice
Turn the sauté function on medium. Stir in the rice and cook for 10 to 12 minutes, stirring occasionally, until the rice is tender.
Step 4: Serve
Serve hot.
Cooking Tips and Pro Tips for Best Results
· Use a mix of bell peppers: Red, green, and yellow add color and flavor.
· Do not add rice too early: Rice can become mushy if cooked too long. Add it during the last 30 minutes.
· Use brown rice for more fiber: Brown rice takes longer to cook (45 to 60 minutes). Add it earlier.
· Make it spicy: Add a diced jalapeño or extra red pepper flakes.
· Add cheese at the end: Stir in ½ cup of shredded cheddar for a cheesy version.
· Make it creamy: Stir in ½ cup of heavy cream or cream cheese at the end.
· Drain the beef well: Excess grease can make the soup greasy.
Variations and Substitutions
· Turkey stuffed pepper soup: Substitute ground turkey for the beef.
· Vegetarian stuffed pepper soup: Omit the beef and add 2 cups of cooked lentils or mushrooms.
· Spicy stuffed pepper soup: Add 1 diced jalapeño and 1 teaspoon of red pepper flakes.
· Cheesy stuffed pepper soup: Stir in 1 cup of shredded cheddar cheese at the end.
· Creamy stuffed pepper soup: Stir in ½ cup of heavy cream at the end.
· Add corn: Add 1 cup of frozen corn during the last 30 minutes.
· Gluten-free: This recipe is naturally gluten-free. Ensure your broth is gluten-free.
Serving Suggestions
This slow cooker stuffed pepper soup is delicious served:
· With crusty bread: For sopping up the broth.
· With a side salad: A crisp green salad with a tangy vinaigrette.
· With shredded cheese and sour cream: For extra richness.
· For meal prep: Portion into containers for easy lunches.
Storage and Reheating Instructions
Refrigerator Storage
Store leftovers in an airtight container in the refrigerator for up to 5 days. The rice will absorb liquid, so the soup will thicken.
Freezer Storage
This soup freezes well for up to 2 months. Cool completely, then transfer to a freezer-safe container. Thaw overnight in the refrigerator before reheating.
Reheating Instructions
· Stovetop method (best): Reheat in a saucepan over medium-low heat, adding a splash of broth or water to thin if needed.
· Microwave method: Heat individual portions for 60 to 90 seconds.
Nutritional Information
Approximate per serving (based on 6 servings, with ground beef and white rice):
· Calories: 420
· Protein: 28g
· Fat: 16g
· Saturated Fat: 6g
· Carbohydrates: 42g
· Fiber: 6g
· Sugar: 10g
· Sodium: 780mg
· Vitamin A: 25% DV
· Vitamin C: 120% DV
· Calcium: 8% DV
· Iron: 20% DV
Note: Nutritional values are estimates and will vary based on specific ingredients and portion sizes.
Frequently Asked Questions
Can I use leftover rice?
Yes. Add cooked rice during the last 5 minutes of cooking just to warm through.
Can I use quinoa instead of rice?
Yes. Quinoa cooks faster (about 15 minutes). Add during the last 15 to 20 minutes.
Why is my soup too thin?
If the soup is too thin, mash some of the beans or vegetables, or let it simmer uncovered for 10 minutes to reduce.
Can I add other vegetables?
Yes. Mushrooms, zucchini, or celery are excellent additions.
Is this recipe gluten-free?
Yes, as written. Ensure your broth is gluten-free.
Can I double this recipe?
Yes. Use a 7-quart or larger slow cooker. Increase cooking time by 1 hour on LOW.
How do I get a thicker soup?
Reduce the amount of broth to 3 cups, or stir in a cornstarch slurry (1 tablespoon cornstarch mixed with 1 tablespoon water).
Can I make this in a slow cooker without browning the beef first?
Yes, but browning adds significant flavor. If you skip browning, cook on LOW for 7 to 8 hours.
Final Thoughts
Slow cooker stuffed pepper soup is the ultimate comfort food—hearty, savory, and packed with the classic flavors of stuffed peppers. The slow cooker does all the work, transforming simple ground beef, bell peppers, and rice into a thick, satisfying soup that tastes like it simmered all day.
This recipe is perfect for busy weeknights, for meal prep, or for any time you crave a warm, comforting meal without a lot of fuss. It is also budget-friendly, freezer-friendly, and endlessly customizable.
So brown that beef, chop those peppers, and let your slow cooker work its magic. That is the beauty of slow cooking—simple ingredients, patient heat, and a whole lot of deliciousness.