Ground beef and onion casserole mixture—often used for low-carb casseroles, keto cheeseburger bakes, or hamburger bakes. The mixture typically includes ground beef, chopped onion, and green peppers pressed into a baking dish before baking.

Here’s a full recipe that matches what’s shown.

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Ground Beef, Onion & Green Pepper Casserole

Ingredients

• 1½ lbs ground beef

• 1 medium onion, diced

• 1 green bell pepper, diced

• 2 cloves garlic, minced

• 1 cup shredded cheddar cheese

• ½ cup breadcrumbs (optional, for texture)

• 1 egg

• ½ cup milk or heavy cream

• 1 tsp salt

• ½ tsp black pepper

• 1 tsp paprika

• 1 tsp Italian seasoning

• 1 tbsp olive oil

Optional additions

• ½ cup mozzarella cheese on top

• 2 tbsp ketchup or tomato paste for flavor

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Instructions

1. Preheat oven

Preheat oven to 375°F (190°C).

2. Cook the beef

1. Heat olive oil in a skillet.

2. Add ground beef and cook until browned.

3. Add garlic, onion, and green pepper.

4. Cook 3–4 minutes until slightly softened.

3. Mix the casserole

In a large bowl combine:

• cooked beef mixture

• egg

• milk or cream

• breadcrumbs

• salt, pepper, paprika, Italian seasoning

• ½ cup shredded cheddar

Mix until combined.

4. Assemble

• Spread the mixture into a greased 9×9 baking dish (like in the image).

• Sprinkle remaining cheese on top.

5. Bake

Bake 25–30 minutes until cooked through and slightly browned.

6. Rest

Let rest 5–10 minutes before slicing.

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✅ Servings: 4–6
⏱ Total time: ~40 minutes

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💡 Serving ideas

• Serve with mashed potatoes or rice.

• Turn it into a low-carb meal by serving with cauliflower rice.

• Add mushrooms or zucchini for more vegetables.

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If you want, I can also show you:

• The viral 5-ingredient hamburger casserole recipe

• A keto version with only 3 carbs per serving

• The famous church-style “Amish hamburger bake.”