Cheesy Protein Egg Bake Recipe
Introduction
This Cheesy Protein Egg Bake is a delicious and satisfying dish perfect for breakfast, brunch, or even a quick dinner. Packed with eggs, cheese, and your choice of sausage or bacon, it’s hearty and easy to prepare ahead of time.

Ingredients
- 8 large eggs
- 1 cup shredded cheddar cheese
- 1 cup shredded mozzarella cheese
- 1 cup diced bell peppers
- 1/2 cup diced onions
- 1 cup cooked sausage or bacon
- 1/2 cup whole milk (or almond milk)
- 1 tsp salt
- 1/2 tsp black pepper
- 1 tsp paprika or fresh herbs (optional)
Instructions
- Step 1: Preheat your oven to 350°F (175°C).
- Step 2: Grease a 9×13 inch baking dish with nonstick spray.
- Step 3: In a skillet over medium heat, sauté diced bell peppers and onions until softened, about 5 minutes.
- Step 4: In a large bowl, whisk together the eggs and milk until fully combined.
- Step 5: Stir in the shredded cheddar and mozzarella cheeses, cooked sausage or bacon, sautéed vegetables, salt, pepper, and optional paprika or fresh herbs.
- Step 6: Pour the mixture into the prepared baking dish and spread it evenly.
- Step 7: Bake for 30 to 35 minutes, until the top is golden brown and the center is set.
Tips & Variations
- Substitute bell peppers with spinach or mushrooms for a different flavor and texture.
- Use turkey sausage or a plant-based alternative for a leaner or vegetarian version.
- Adding fresh herbs like parsley or chives can brighten up the dish.
- Let the bake rest for 5 minutes before cutting to help it set and make serving easier.
Storage
Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat individual portions in the microwave for about 1 minute or until warmed through. This egg bake also freezes well; thaw overnight in the fridge before reheating.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I make this recipe dairy-free?
Yes, you can use dairy-free cheese alternatives and almond or other plant-based milk. The texture will be slightly different but still delicious.
Can I prepare this egg bake the night before?
Absolutely. You can assemble the mixture and refrigerate it overnight, then bake it fresh the next morning for a convenient, make-ahead meal.
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Cheesy Protein Egg Bake Recipe
- Total Time: 45-50 minutes
- Yield: 8 servings 1x
Description
This Cheesy Protein Egg Bake is a hearty and delicious breakfast or brunch option packed with eggs, melted cheddar and mozzarella cheeses, sautéed bell peppers and onions, and savory sausage or bacon. Baked to golden perfection, it’s an easy one-dish meal that combines creamy textures and flavorful ingredients to satisfy your morning cravings while providing a balanced protein boost.
Ingredients
Egg Mixture
- 8 large eggs
- 1/2 cup whole milk (or almond milk)
- 1 tsp salt
- 1/2 tsp black pepper
- 1 tsp paprika or fresh herbs (optional)
Vegetables
- 1 cup diced bell peppers
- 1/2 cup diced onions
Cheeses
- 1 cup shredded cheddar cheese
- 1 cup shredded mozzarella cheese
Protein
- 1 cup cooked sausage or bacon
Instructions
- Preheat Oven: Preheat your oven to 350°F (175°C) to ensure it’s ready for baking your egg dish.
- Prepare Baking Dish: Grease a 9×13 inch baking dish with nonstick spray to prevent sticking and make removal easier.
- Sauté Vegetables: In a skillet over medium heat, sauté diced bell peppers and onions for approximately 5 minutes until they are softened and fragrant, enhancing their flavor for the bake.
- Whisk Egg Mixture: In a large bowl, whisk together the eggs and milk until evenly combined to create a smooth base for the bake.
- Combine Ingredients: Stir in the shredded cheddar and mozzarella cheeses, cooked sausage or bacon, sautéed vegetables, salt, pepper, and optional paprika or fresh herbs until all ingredients are well distributed.
- Pour Into Dish: Pour the combined mixture into the prepared baking dish, spreading it evenly to ensure uniform cooking.
- Bake: Place the dish in the preheated oven and bake for 30-35 minutes until the top is golden brown, and the center is fully set and firm to the touch.
Notes
- For a vegetarian version, omit the sausage or bacon and add extra vegetables like spinach or mushrooms.
- You can substitute almond milk for whole milk to make it dairy-free and lighter.
- Use fresh herbs like parsley or chives instead of paprika for a different flavor profile.
- Leftovers can be refrigerated and reheated for a quick breakfast next day.
- Ensure the egg bake is fully set in the center before removing to avoid undercooked eggs.
- Prep Time: 15 minutes
- Cook Time: 30-35 minutes
- Category: Breakfast
- Method: Baking
- Cuisine: American
Keywords: egg bake, cheesy egg casserole, protein breakfast, baked eggs, sausage egg bake, easy breakfast casserole