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Brunch Party Casserole

A cozy, crowd-pleasing casserole perfect for brunch gatherings, combining eggs, bread, cheese, and various delicious ingredients for a delightful morning feast.
Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Course Breakfast, Brunch
Cuisine American
Servings 8 servings
Calories 350 kcal

Ingredients
  

Casserole Base Ingredients

  • 8 large large eggs Free-range eggs add richer flavor.
  • 2 cups milk or half-and-half Use milk for a lighter option; half-and-half for a richer custard.
  • 6 cups cubed day-old bread Sourdough or country loaf preferred.
  • 1 cup shredded gruyere or cheddar Nutritional yeast can be used as a dairy-free alternative.
  • 1 cup cooked breakfast sausage or diced ham Substitute with crumbled tempeh or roasted mushrooms for a vegetarian option.
  • 1 small red onion, thinly sliced Shallots can be used as an alternative.
  • 1 cup spinach, roughly chopped Kale can also be used.
  • 2 tablespoons chopped chives or parsley For added freshness.
  • 1 teaspoon Dijon mustard Balances richness with tang.
  • 1/2 teaspoon salt Season to taste.
  • 1/4 teaspoon black pepper Season to taste.

Optional Additions

  • handful cherry tomatoes, halved Optional for added flavor.
  • pinch smoked paprika Optional for added warmth.

Instructions
 

Preparation

  • Preheat the oven to 375°F (190°C) and grease a 9x13-inch baking dish with butter or oil.
  • In a large bowl, whisk eggs, milk, Dijon mustard, salt, and pepper until frothy and smooth. Taste for seasoning.
  • Layer cubed bread, cooked sausage or mushrooms, sliced onion, spinach, and half of the shredded cheese in the prepared dish. Add cherry tomatoes if using.
  • Pour the egg mixture evenly over the bread layers, pressing gently to help it soak up the custard. Top with remaining cheese and chopped herbs.
  • Let it sit for 10–15 minutes, or refrigerate overnight for easier prep in the morning.

Baking

  • Bake uncovered for 40–45 minutes until the top is golden and a knife inserted in the center comes out clean.
  • Let rest for 10 minutes before slicing and serve warm with extra herbs on top.

Notes

Feel free to customize with various toppings and side dishes, such as a crisp green salad or fresh fruit. Can be made vegetarian or low-carb by substituting certain ingredients.
Keyword Brunch Casserole, Comfort Food, Crowd-Pleasing, Easy Recipe, Make-ahead