A hearty one-pot soup made with ground beef, colorful bell peppers, tomatoes, herbs, and cauliflower rice instead of traditional rice. Low-carb versions commonly use cauliflower rice to keep the classic stuffed-pepper flavor while reducing the carbohydrate content.

Note: I can’t verify the claim that this soup itself causes a specific amount of weight loss, so it’s better to treat it as a nutritious, filling soup rather than a guaranteed weight-loss method.

Ingredients

Serves: 6
Prep time: 15 minutes
Cook time: 35–40 minutes
Total: About 50–55 minutes

• 1 lb (450 g) lean ground beef
• 1 tablespoon olive oil
• 1 medium yellow onion, diced
• 3 cloves garlic, minced
• 1 green bell pepper, diced
• 1 red bell pepper, diced
• 1 yellow or orange bell pepper, diced
• 2 medium carrots, diced
• 2 medium tomatoes, chopped
• 1 can (14–15 oz) diced tomatoes, preferably no-sugar-added
• 2 tablespoons tomato paste
• 4 cups low-sodium beef broth
• 2 cups cauliflower rice, fresh or frozen
• 1 teaspoon Italian seasoning
• 1 teaspoon smoked paprika
• ½ teaspoon dried oregano
• ½ teaspoon black pepper
• ½ teaspoon salt, or to taste
• ¼ teaspoon red pepper flakes, optional
• 1 tablespoon Worcestershire sauce, optional
• 2 tablespoons fresh parsley, chopped
• 1 tablespoon fresh basil, chopped, optional

Optional toppings

• 1–2 tablespoons grated Parmesan per serving
• Fresh parsley
• A small spoonful of plain Greek yogurt

Instructions

1. Brown the beef

Heat a large soup pot over medium-high heat. Add the ground beef and cook for about 6–8 minutes, breaking it apart with a spoon until browned and cooked through.

Drain excess grease if necessary.

2. Sauté the vegetables

Add the olive oil, onion, green pepper, red pepper, yellow/orange pepper, and carrots.

Cook for 5–7 minutes, stirring occasionally, until the vegetables begin to soften.

Add the garlic and cook for another 30 seconds.

3. Add the seasonings

Stir in:

• Italian seasoning
• Smoked paprika
• Oregano
• Black pepper
• Salt
• Red pepper flakes, if using

Cook for about 30 seconds so the spices become fragrant.

4. Build the soup

Add the chopped fresh tomatoes, canned diced tomatoes, tomato paste, beef broth, and Worcestershire sauce if using.

Stir well and bring the soup to a gentle boil.

5. Simmer

Reduce the heat to low, cover, and simmer for 20–25 minutes.

This gives the peppers, carrots, tomatoes, and beef time to develop a richer flavor.

6. Add cauliflower rice

Stir in the cauliflower rice.

• Fresh cauliflower rice: simmer about 7–10 minutes.
• Frozen cauliflower rice: usually 5–7 minutes is enough.

Avoid overcooking it so it doesn’t become mushy.

7. Finish

Taste and adjust the salt and pepper.

Stir in fresh parsley and basil just before serving.

Ladle into bowls and top with a little Parmesan if desired.

Nutrition Information

Approximate per serving, without Parmesan:

• Calories: ~280–320
• Protein: ~24–27 g
• Total carbohydrates: ~18–21 g
• Fiber: ~5–6 g
• Net carbs: ~13–16 g
• Fat: ~13–16 g
• Saturated fat: ~4–5 g
• Sugar: ~9–11 g
• Sodium: ~500–700 mg, depending on the broth and canned tomatoes

Nutrition will vary considerably depending on the beef’s fat percentage and the brands of broth and tomatoes used. Comparable low-carb stuffed-pepper soups use cauliflower rice in place of conventional rice and report roughly 6–7 g net carbs in some versions.

Why cauliflower rice?

Traditional stuffed pepper soup often contains rice. Cauliflower rice gives the soup a similar hearty texture while keeping the carbohydrate content lower.

Storage

• Refrigerator: Store in an airtight container for up to 3–4 days.
• Freezer: Freeze in individual portions for convenient meals.
• Reheating: Warm gently on the stovetop or in the microwave until steaming hot.
• If the soup becomes too thick after refrigeration, add a little broth or water while reheating.

Q&A

Q: Can I use ground turkey instead of beef?
Yes. Ground turkey or chicken works well and gives the soup a lighter flavor.

Q: Can I leave out the carrots?
Yes. For a lower-carbohydrate version, you can omit them and add extra bell pepper, zucchini, or cauliflower.

Q: Can I use frozen cauliflower rice?
Absolutely. Add it near the end of cooking so it retains some texture.

Q: Can I use regular rice?
Yes, but regular rice will make the soup substantially higher in carbohydrates. For the low-carb version, cauliflower rice is the better choice.

Q: Can I make it dairy-free?
Yes. Simply skip the Parmesan topping.

Q: Can I make it vegetarian?
Yes. Replace the beef with beans, lentils, mushrooms, or a suitable plant-based protein and use vegetable broth.

Q: How can I make it spicier?
Add red pepper flakes, diced jalapeño, or a little cayenne pepper.

Q: Why did my soup become too thick?
Cauliflower rice absorbs some liquid. Simply add additional broth until you reach your preferred consistency.

Q: Can I prepare it ahead of time?
Yes. It works well as a make-ahead soup, and the flavors can develop further after resting.