Ham and Cheese Breakfast Casserole

4.72 from 46 votes

Ham and Cheese Breakfast Casserole

Ham and Cheese Breakfast Casserole is my favorite make-ahead breakfast for special occasions. This breakfast casserole with ham, cheese, bread, eggs, herbs, and more is sure to please everyone and so easy to make! It’s so comforting, creamy, simple, and bursting with flavor.

Prep Time20

Cook Time40

Total Time1

Course: Breakfast

Cuisine: American

Servings:

Author: Becky Hardin

Ingredients

4 cups day-old, challah or brioche bread, cut into 1-inch cubes.
2 tablespoons olive oil
1 tablespoon unsalted butter
1 medium sweet yellow onion peeled and diced
½ teaspoon Kosher salt
½ teaspoon freshly ground black pepper
¼ teaspoon granulated sugar
½ lb. thinly-sliced good deli ham roughly cut
6 large eggs
1½ cups milk or half and half
½ teaspoon dry mustard
¼ teaspoon grated nutmeg
2 teaspoons fresh thyme leaves minced
salt & pepper to taste
1 cup shredded Gruyere or Swiss cheese

Instructions

Spray an 8-inch baking dish (1½-2 qt) with non-stick cooking spray.
Cut brioche bread into small cubes and spread the cubed bread in the bottom of the dish.
4 cups
Heat oil and butter in a large skillet over medium-low heat.
Add diced onion, salt, black pepper, and sugar. Sauté until onions are lightly caramelized, approximately 10 minutes. Be careful not to burn the onion.
2 tablespoons olive oil, 1 tablespoon unsalted butter, 1 medium sweet yellow onion, ½ teaspoon Kosher salt, ½ teaspoon freshly ground black pepper, ¼ teaspoon granulated sugar
In a medium bowl whisk together the eggs, half and half, dry mustard, nutmeg, thyme, salt, and pepper.
6 large eggs, 1½ cups milk or half and half, ½ teaspoon dry mustard, ¼ teaspoon grated nutmeg, 2 teaspoons fresh thyme leaves, salt & pepper
Spread the ham over the bread cubes, then spread the onion mixture on top of the ham.
½ lb. thinly-sliced good deli ham
Layer on the Gruyere or Swiss cheese then pour the egg mixture over the cheese.
1 cup shredded Gruyere or Swiss cheese
Press down gently on the top to ensure all bread cubes get soaked with the egg mixture. Cover and refrigerate overnight.
Before baking, warm the casserole on the counter for 15 minutes and preheat the oven to 350°F.
Bake, uncovered, 40-50 minutes or until center is set and edges are bubbly and top begins to brown. A knife inserted in the center should come out clean.
If casserole is browning too soon, loosely cover it with foil near the end of the cooking time. The casserole is delicious served for any meal. Enjoy!

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