Easy Breakfast Casserole Recipe

Introduction

This Easy Breakfast Casserole is a hearty and flavorful start to your day, packed with ham, veggies, and plenty of cheese. It’s perfect for busy mornings or weekend brunches when you want something satisfying without a lot of fuss.

Ingredients

• 3 tbsp Olive oil (divided into 1 tbsp and 2 tbsp)
• 1 lb Ham (diced; or sausage, or more of the veggies below)
• 1 medium Yellow onion (diced)
• 6 cloves Garlic (minced)
• 2 large Bell peppers (diced; red and green suggested)
• 1 1/2 cups White mushrooms (thinly sliced)
• 12 large Eggs
• 1/2 cup Half and half (or any milk of your choice)
• 2 cups Cheddar cheese (shredded and divided; or any cheese of your choice)
• 1/4 tsp Sea salt
• 1/4 tsp Black pepper
• 2 tbsp Green onions (chopped; optional for garnish or to stir into the casserole)

Instructions

1. Step 1: Preheat the oven to 375 degrees F (191 degrees C) and grease the bottom of a large baking dish.
2. Step 2: Heat 1 tablespoon of olive oil in a large skillet over medium heat. Add the diced ham and cook for 5-6 minutes until browned. Remove the ham and set aside.
3. Step 3: Add the remaining 2 tablespoons of olive oil to the skillet and heat until shimmering. Add diced onions and sauté for 3-5 minutes until translucent.
4. Step 4: Stir in the minced garlic, diced bell peppers, and sliced mushrooms. Cook for 6-8 minutes until the vegetables soften.
5. Step 5: Remove the skillet from heat, stir the cooked ham into the vegetable mixture, and add green onions if using. Transfer the mixture into the prepared baking dish.
6. Step 6: In a large bowl, whisk together the eggs, half and half (or milk), 1 cup of shredded cheese, salt, and black pepper.
7. Step 7: Pour the egg mixture over the ham and vegetables in the baking dish. Stir gently to combine, then sprinkle the remaining 1 cup of cheese on top.
8. Step 8: Bake the casserole for about 30 minutes, or until the eggs are set but still soft and the edges turn golden brown.
9. Step 9: Garnish with additional chopped green onions if desired before serving.

Tips & Variations

• For a vegetarian version, omit the ham and add more vegetables like spinach or zucchini.
• Use your favorite cheese—mozzarella or pepper jack adds a nice twist.
• Make ahead by preparing the casserole the night before and refrigerate; bake in the morning, adding a few extra minutes to the baking time.
• Swap half and half for whole milk or almond milk to lighten the dish or accommodate dietary preferences.

Storage

Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat individual portions in the microwave for 1-2 minutes until warm. You can also freeze the casserole before baking; thaw overnight in the fridge, then bake as directed, adding additional cooking time if needed.

How to Serve

Serve this delicious recipe with your favorite sides.

FAQs

Can I use frozen vegetables in this casserole?

Yes, you can substitute frozen vegetables but make sure to thaw and drain them well before cooking to avoid excess moisture in the dish.

Can this casserole be made dairy-free?

Absolutely. Use a dairy-free milk alternative such as almond or oat milk, and replace the cheese with a plant-based cheese substitute.

Easy Breakfast Casserole Recipe

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5 from 67 reviews

This Easy Breakfast Casserole is a hearty and flavorful morning dish perfect for busy weekdays or leisurely weekends. Combining savory ham, sautéed vegetables, fluffy eggs, and melted cheddar cheese, this casserole offers a satisfying and comforting start to your day. It’s simple to prepare, baked to golden perfection, and can be customized with your favorite ingredients.

• Author: Elena
• Prep Time: 15 minutes
• Cook Time: 30 minutes
• Total Time: 45 minutes
• Yield: 6–8 servings 1x
• Category: Breakfast
• Method: Baking
• Cuisine: American

Ingredients

Scale 1x2x3x

Protein

• 1 lb Ham (diced; or sausage, or more of the veggies below)
• 12 large Eggs

Vegetables

• 1 medium Yellow onion (diced)
• 6 cloves Garlic (minced)
• 2 large Bell peppers (diced; red and green recommended)
• 1 1/2 cups White mushrooms (thinly sliced)
• 2 tbsp Green onions (chopped; optional for garnish or stir-in)

Dairy

• 1/2 cup Half and half (or any milk of your choice)
• 2 cups Cheddar cheese (shredded and divided; or any cheese of choice)

Other

• 3 tbsp Olive oil (divided into 1 tbsp and 2 tbsp)
• 1/4 tsp Sea salt
• 1/4 tsp Black pepper

Instructions

1. Preheat and Prepare: Preheat your oven to 375°F (191°C) and grease the bottom of a large baking dish to prevent sticking and ensure easy serving.
2. Cook the Ham: Heat 1 tablespoon of olive oil in a large skillet over medium heat. Add the diced ham and cook for 5-6 minutes until browned and fragrant. Remove the ham from the skillet and set aside.
3. Saute Onions: Add the remaining 2 tablespoons of olive oil to the skillet and heat until shimmering. Add the diced onions and sauté for 3-5 minutes until they become translucent and soft.
4. Add Vegetables: Stir in the minced garlic, diced bell peppers, and sliced mushrooms. Cook for an additional 6-8 minutes until the vegetables soften and release their flavors.
5. Combine Ham and Veggies: Remove the skillet from heat and mix the cooked ham back into the vegetable mixture. Optionally, stir in chopped green onions for extra flavor. Transfer this mixture evenly into the prepared baking dish.
6. Prepare Egg Mixture: In a large bowl, whisk together the eggs, half and half (or your preferred milk), 1 cup of shredded cheddar cheese, sea salt, and black pepper until well combined.
7. Assemble Casserole: Pour the egg mixture over the ham and vegetable layer in the baking dish. Stir gently to mix all ingredients evenly. Sprinkle the remaining 1 cup of cheddar cheese on top.
8. Bake: Place the casserole in the preheated oven and bake for about 30 minutes, or until the eggs are set but still soft and the edges turn golden brown.
9. Garnish and Serve: Remove the casserole from the oven and garnish with additional chopped green onions if desired. Serve warm for a filling breakfast.

Notes

• You can substitute ham with cooked sausage or increase the quantity of vegetables for a vegetarian version.
• Feel free to use any variety of cheese you prefer for different flavors.
• Leftovers can be refrigerated and reheated for a quick breakfast on the go.
• For a dairy-free option, use plant-based milk and cheese alternatives.

Keywords: breakfast casserole, easy breakfast, ham casserole, baked eggs, cheesy breakfast, vegetable casserole