Buttery Breakfast Casserole – A Comforting Morning Favorite

Introduction: The Ultimate Make-Ahead Morning Meal

Whether you’re hosting brunch, meal-prepping for the week, or simply craving a warm and satisfying breakfast, this Buttery Breakfast Casserole delivers everything you need. It’s creamy, cheesy, packed with protein, and filled with rich, buttery flavor that makes every bite irresistible. Additionally, it’s easy to make ahead the night before and bake fresh come morning!

Ingredients

For a 9×13-inch casserole dish (serves 8):

• 6 large eggs
• 2 cups whole milk
• 1 teaspoon salt
• ½ teaspoon black pepper
• 1 teaspoon garlic powder
• 6 cups cubed day-old bread (white or sourdough)
• 1½ cups shredded cheddar cheese
• ½ cup shredded mozzarella cheese
• 1 cup cooked breakfast sausage or bacon (crumbled)
• ½ cup melted unsalted butter
• 2 tablespoons chopped chives or green onions (optional)

How to Make Buttery Breakfast Casserole – Step by Step

Step 1: Prepare the Base

• In a spacious bowl, thoroughly beat the eggs with milk, salt, pepper, and garlic powder until the mixture is smooth and well blended.
• Stir in the melted butter for that rich, comforting flavor.

Step 2: Assemble the Layers

• Grease a 9×13-inch baking dish.
• Mix in the cubed bread and cooked sausage or bacon, then sprinkle the cheeses evenly on top.
• Evenly pour the egg and milk mixture over the whole dish.
• Press gently with a spoon to make sure all bread pieces soak up the liquid.

Step 3: Chill (Optional for Overnight Prep)

• Cover the casserole and refrigerate for at least 1 hour, or overnight for a make-ahead option.

Step 4: Bake

• Preheat oven to 350°F (175°C).
• Bake, uncovered, for 40–45 minutes, until the top is golden brown and the center is set

Step 5: Garnish & Serve

• Let cool for 5–10 minutes before slicing.
• Sprinkle with chopped chives or green onions for a fresh finish.

Why You’ll Love This Casserole

• 🧈 Buttery richness in every bite
• 🍳 High in protein and perfect for starting the day
• 🧀 Gooey cheese combined with savory sausage creates an explosion of flavor.
• 🕒 Make-ahead friendly for busy mornings
• 🥖 Great use for leftover bread

Nutrition Facts (Per Serving – Approximate)

Nutrient	Amount
Calories	320–350 kcal
Protein	15–18 g
Carbs	20–25 g
Fat	22–25 g
Sugar	2–3 g

Based on ingredients used; nutritional values may vary.

Read:Easy Skillet Dinner Rolls – Soft, Buttery & Baked to Perfection

Tips & Variations

• 🥬 Add veggies like spinach, bell peppers, or mushrooms for extra nutrition.
• 🥓 Use all bacon, all sausage, or go meatless!
• 🌶 Add a pinch of chili flakes or hot sauce for a spicy kick.
• 🧈 Swap butter with garlic herb butter for extra depth.
• 🧊 Freezing Tip: Wrap securely and freeze for up to 3 months without losing quality.

Storage & Reheating

• Fridge: Store leftovers in an airtight container for up to 4 days.
• Reheat: Microwave individual portions or reheat in the oven at 325°F (160°C) for 10–15 minutes.

Final Thoughts

This Buttery Breakfast Casserole is a go-to comfort dish for a reason. It’s hearty, crowd-pleasing, and easy to customize to your liking. Whether it’s for a holiday morning, weekend brunch, or weekly meal prep, this recipe will quickly become a household favorite.

Read:The Perfect Creamy Cucumber Salad with Boiled Eggs