Overnight Croissant Breakfast Casserole: Holiday Brunch Recipes

Introduction

An irresistible Overnight Croissant Breakfast Casserole is the key to a stress-free, mouthwatering holiday brunch. With layers of buttery croissants, savory cheeses, and wholesome add-ins, this dish can be prepped the night before, letting you relax and enjoy the festivities. It’s the ultimate crowd-pleaser—luxuriously textured and loaded with flavor—making your holiday morning both memorable and effortlessly delicious.

Why This Overnight Croissant Breakfast Casserole Stands Out

The brilliance of this casserole lies in its simplicity and flavor. Flaky croissants soak up a rich egg custard overnight, creating a decadently soft base that contrasts perfectly with crispy toppings and gooey melted cheese. Customizable with your favorite meats, vegetables, or cheeses, this casserole fits any brunch theme and suits any crowd, from hearty meat-lovers to vegetarians.

Choosing and Prepping Your Ingredients

Start with high-quality, preferably day-old croissants—these soak up the custard best and yield a satisfying, tender bite. Use a sharp knife or a Bamboo Cutting Board to slice croissants and vegetables quickly and safely. For speedy prep, a Mueller Pro-Series 10-in-1, 8 Blade Vegetable Chopper makes light work of onions, peppers, or other mix-ins, ensuring uniform pieces for even cooking.

Add-ins like sautéed spinach, ham, mushrooms, or bell peppers add flair and nutrition. Shred cheese in advance and store it in Rubbermaid Brilliance Food Storage Containers for easy assembly the next morning.

Assembly and Overnight Magic

Layer sliced croissants, cooked veggies, meats, and cheese in a buttered baking dish. Whisk eggs, milk, and seasoning until smooth—using a Ninja BL610 Professional 72 Oz Countertop Blender makes this step silky and fast. Pour the custard over the croissant layers, ensuring even coverage. Cover and refrigerate overnight so every bite absorbs maximum flavor.

For a crisped, golden top, bake uncovered on a Reynolds Kitchens Brown Parchment Paper Roll to prevent sticking and ease cleanup.

Serving Suggestions for Holiday Brunch

When your guests arrive, all that’s left is to bake! Serve hot from the oven, pairing this casserole with fresh fruit, a leafy green salad in a Bentgo Salad Container, or an array of festive beverages. For holiday décor, dress your table with a disposable Pureegg Plastic Table Cloth and set out a carafe of rich coffee or mimosas to complete your brunch.

Nutritional Information and Serving Size

This recipe yields 8 generous portions. Each serving offers a balanced mix of protein, carbs, and healthy fats, depending on your add-ins. Expect about 350–450 calories per serving—a hearty start to any celebratory day.

Recap: Holiday Brunch Made Easy

The Overnight Croissant Breakfast Casserole delivers gourmet comfort with minimal morning effort. It looks and tastes impressive, and the make-ahead magic ensures you enjoy more quality time with loved ones. Make it your new holiday tradition!

Instructions

1. Grease a 9×13-inch baking dish with butter. Arrange croissant halves or slices in a single layer.
2. Layer your choice of cooked ham, sausage, or vegetables, followed by diced onions and half of the shredded cheese.
3. In a blender such as the Ninja BL610 Professional 72 Oz Countertop Blender, combine eggs, milk, salt, pepper, mustard, and herbs. Blend until very smooth.
4. Pour the egg mixture evenly over the layered croissants, pressing down gently to ensure even soaking. Top with the remaining cheese.
5. Cover with foil and refrigerate overnight (at least 8 hours).
6. The next morning, preheat oven to 350°F. Bake casserole, uncovered, on a Reynolds Kitchens Brown Parchment Paper Roll lined tray for easy cleanup, for 40-50 minutes, or until puffed and golden and a knife inserted in the center comes out clean.
7. Let cool 5 minutes before slicing. Serve warm, optionally garnished with additional herbs or freshly ground pepper.

Cook and Prep Times

Prep Time: 20 minutes
Chill Time: Overnight (8 hours)
Bake Time: 45 minutes
Total Time: ~9 hours 5 minutes

Enjoy a holiday brunch with maximum flavor and minimal stress by letting this overnight casserole take center stage!