Name: California Breakfast Casserole
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Cuisine: American
Ingredients: 10 large eggs; 1/2 cup milk or half-and-half; 3 cups frozen hash browns or diced potatoes, thawed; 1 red bell pepper, diced; 1/2 cup green onions, chopped; 1 ripe avocado, sliced (for topping); 1 cup shredded cheddar cheese; 1 cup shredded Monterey Jack cheese; 1 teaspoon salt; 1/2 teaspoon black pepper

Why You’ll Love This Recipe

Combines classic breakfast flavors in one convenient dish.
Packed with fresh California-inspired ingredients like avocado and bell peppers.
Easy to prepare ahead of time and bake when ready.
Great for feeding a crowd at brunch gatherings.
Balanced with protein, vegetables, and creamy goodness.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

Eggs
Milk or half-and-half
Frozen hash browns or diced potatoes
Red bell pepper
Green onions
Avocado
Shredded cheddar cheese
Monterey Jack cheese
Salt and pepper

Directions

Preheat oven to 350°F (175°C) and grease a 9×13-inch baking dish.
In a bowl, whisk together eggs, milk, salt, and pepper.
Spread hash browns evenly in the prepared dish.
Layer with , bell pepper, green onions, and shredded cheeses.
Pour egg mixture over the top.
Bake for 40–45 minutes, or until eggs are set and the top is golden.
Let cool slightly, then top with sliced avocado before serving.

Servings and timing

This recipe makes about 8 servings. Prep time is 15 minutes, baking time is 45 minutes, for a total of 1 hour.

Variations

Add spinach, mushrooms, or zucchini for extra vegetables.
Use pepper jack cheese for a spicy kick.
Make it vegetarian by skipping the meat and adding more veggies.
Try sweet potatoes instead of hash browns for a twist.

Storage/Reheating

Store leftovers covered in the refrigerator for up to 4 days. Reheat individual portions in the microwave, or warm the entire dish in the oven at 325°F (160°C) until heated through. Freeze baked casserole (without avocado topping) for up to 2 months. Thaw overnight in the fridge and reheat before serving.

FAQs

Can I make this casserole the night before?

Yes, assemble everything except the avocado, refrigerate overnight, and bake in the morning.

Do I have to use frozen hash browns?

No, you can use fresh diced potatoes instead.

Can I add avocado before baking?

It’s best to add avocado after baking to keep it fresh and creamy.

How do I know when the casserole is done?

The eggs should be set in the center and not jiggly.

Can I use egg whites only?

Yes, replace whole eggs with egg whites or a carton of liquid egg whites.

Can I make it dairy-free?

Use non-dairy milk and dairy-free cheese alternatives.

What’s the best cheese for this recipe?

Cheddar and Monterey Jack are classic, but any melting cheese works well.

Can I add jalapeños for spice?

Yes, diced jalapeños or hot sauce add great flavor.

How should I serve this casserole?

It pairs well with fresh fruit, toast, or a simple green salad.

Conclusion

California Breakfast Casserole is a vibrant, filling dish that combines the best breakfast flavors into one convenient bake. With its layers of eggs, potatoes, veggies, cheese, and creamy avocado, it’s a perfect option for weekend brunches, holidays, or meal prep. Once you try it, this fresh and satisfying casserole will become a household favorite.