Stuffed Pepper Casserole Beef

Featured in Hearty Main Courses.

This stuffed pepper casserole is the perfect combination of savory flavors, hearty textures, and bold ingredients. Made with ground beef, bell peppers, onions, garlic, and aromatic seasonings, it's a true comfort food classic. Long grain rice absorbs all the rich goodness of beef broth and tomatoes, while a melty duo of mozzarella and cheddar cheese adds the finishing touch. Quick to prepare and satisfying for the whole family, this dish is ideal for weeknight dinners or a simple weekend treat.

Casey
Updated on Wed, 02 Jul 2025 20:35:22 GMT
Stuffed Pepper Casserole Beef Pin it
Stuffed Pepper Casserole Beef | cookingwithcasey.com

This stuffed pepper casserole transforms the classic stuffed bell peppers into an easier, family-friendly one-pot meal. I created this recipe when I was craving traditional stuffed peppers but didn't have the patience for all that filling and baking. The result is all those beloved flavors with much less fuss!

I first made this casserole during a busy weeknight when my family was craving comfort food but I was short on time. Now it's requested at least twice a month, especially during fall and winter when we need something hearty and satisfying.

Ingredients

  • Ground beef Use 80/20 lean-to-fat ratio for the best flavor without excess grease
  • Bell peppers Choose different colors for visual appeal and slightly different flavor profiles
  • Onion Adds essential aromatics and sweetness as it cooks down
  • Garlic cloves Fresh minced garlic provides much better flavor than the pre-minced jarred variety
  • Worcestershire sauce Adds umami depth that enhances the beefy flavor
  • Italian seasoning This blend saves time instead of measuring individual herbs
  • Canned diced tomatoes The juice creates moisture for cooking the rice properly
  • Beef broth Choose low sodium to control salt levels better
  • Long grain white rice Absorbs flavors while cooking directly in the sauce
  • Mozzarella and cheddar cheese The combination offers both stretchy texture and sharp flavor

Step-by-Step Instructions

Brown the Beef
Cook ground beef over medium heat until no longer pink, breaking it into small pieces with your spatula. This should take about 5 minutes. Don't drain the fat as it adds flavor to the dish.
Add Vegetables
Incorporate chopped bell peppers and onions into the skillet with the beef. Cook for 5 to 10 minutes, stirring occasionally. Look for the onions to become translucent and peppers to slightly soften but not get mushy.
Incorporate Aromatics
Add minced garlic to the meat and vegetable mixture. Cook for just 1 to 2 minutes until you can smell the garlic. Be careful not to burn it as garlic can quickly become bitter.
Create the Base
Stir in all seasonings, Worcestershire sauce, beef broth, diced tomatoes with their juice, and uncooked rice. Make sure to scrape any browned bits from the bottom of the pan these contain concentrated flavor.
Simmer to Perfection
Bring everything to a boil, then reduce heat to maintain a gentle simmer. Cover the pan tightly and cook for 20 minutes. Stir once halfway through cooking to prevent sticking. The rice should absorb most of the liquid and become tender.
Incorporate Cheese
Remove from heat and stir in half of both cheeses until completely melted and incorporated throughout the mixture. This creates a creamy, cheesy base throughout the entire casserole.
Finish with More Cheese
Sprinkle the remaining cheese evenly across the top of the casserole. Cover again for a few minutes until melted, or if you want a slightly browned top, place under the broiler for 2 to 3 minutes if using an oven safe pan.
Stuffed Pepper Casserole Beef Pin it
Stuffed Pepper Casserole Beef | cookingwithcasey.com

My favorite part of this recipe is how the rice cooks directly in the skillet, absorbing all those amazing flavors from the beef and vegetables. My husband actually prefers this deconstructed version to traditional stuffed peppers because every bite contains the perfect balance of ingredients.

Make Ahead and Storage

This casserole keeps beautifully in the refrigerator for up to 4 days in an airtight container. The flavors actually improve overnight as they meld together. Reheat individual portions in the microwave for 2 to 3 minutes, or warm a larger portion covered in the oven at 350°F for about 20 minutes until heated through.

Ingredient Substitutions

For a healthier version, substitute ground turkey or chicken for the beef. If using poultry, consider switching to chicken broth instead of beef broth. Brown rice can replace white rice for additional fiber, but you'll need to increase the cooking time by about 15 minutes and possibly add an extra 120ml of broth. Vegetarians could use plant based ground meat alternatives and vegetable broth for a meatless version.

Serving Suggestions

This casserole is truly a complete meal on its own, but I like to serve it with a simple green salad dressed with lemon vinaigrette to add freshness. For a heartier meal, warm crusty bread makes an excellent accompaniment for sopping up any remaining sauce. A dollop of sour cream on top adds a pleasant tangy contrast to the rich, savory flavors.

Stuffed Pepper Casserole Beef Pin it
Stuffed Pepper Casserole Beef | cookingwithcasey.com

Frequently Asked Questions

→ Can I use ground turkey instead of beef?

Yes, ground turkey can be substituted for beef. It provides a leaner option and pairs well with the other ingredients.

→ Can I make this dish ahead of time?

Absolutely! Prepare the casserole up to the point of adding cheese. Refrigerate and reheat when ready to serve, melting the cheese fresh.

→ Can I use brown rice instead of white rice?

Yes, but brown rice takes longer to cook. Adjust the cooking time and ensure there's enough liquid to fully cook it.

→ How can I make this casserole spicier?

Add a pinch of red chili flakes or diced jalapeños while cooking. You can also use a spicy sausage instead of ground beef.

→ What cheese works best for this dish?

Mozzarella and cheddar are ideal for flavor and melting, but you can experiment with Monterey Jack or Pepper Jack for additional flavor.

Stuffed Pepper Casserole Beef

A comforting blend of beef, peppers, rice, and cheese for a hearty meal.

Prep Time
15 Minutes
Cook Time
30 Minutes
Total Time
45 Minutes
By: Casey

Category: Hearty Main Dishes

Difficulty: Easy

Cuisine: American

Yield: 4 Servings

Dietary: Gluten-Free

Ingredients

→ Main Components

01 450 g ground beef
02 2 bell peppers, chopped
03 1 onion, finely chopped
04 3 cloves garlic, minced

→ Seasonings and Sauce

05 1 tablespoon Worcestershire sauce
06 1 tablespoon Italian seasoning
07 1 teaspoon salt
08 0.5 teaspoon ground black pepper

→ Liquids

09 425 g canned low sodium beef broth
10 425 g canned diced tomatoes

→ Rice and Cheese

11 180 g uncooked long grain white rice
12 75 g shredded mozzarella cheese
13 75 g shredded cheddar cheese

Instructions

Step 01

Heat a large skillet over medium heat. Add the ground beef and cook, breaking it apart with a spatula, until mostly browned.

Step 02

Add onions and bell peppers to the skillet. Continue cooking for 5 to 10 minutes until the vegetables start to soften.

Step 03

Incorporate minced garlic and cook for 1 to 2 minutes until fragrant.

Step 04

Stir in Worcestershire sauce, Italian seasoning, salt, black pepper, beef broth, diced tomatoes, and uncooked rice. Mix thoroughly.

Step 05

Increase heat to bring the mixture to a boil. Cover, reduce to a simmer, and cook for 20 minutes, stirring once halfway through, until the rice is tender.

Step 06

Remove lid and stir in half of the shredded mozzarella and cheddar cheeses until melted into the mixture.

Step 07

Sprinkle remaining cheese evenly over the top. Cover and allow cheese to melt, or place under the grill for rapid melting if your pan is oven-proof. Remove from heat and serve immediately.

Notes

  1. For best results, use freshly shredded cheese to achieve optimal melting and creaminess.

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Dairy

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 350
  • Total Fat: 18 g
  • Total Carbohydrate: 25 g
  • Protein: 22 g