Tahoe Brunch Casserole
The aroma of fresh coffee has a way of drawing everyone into the kitchen. Before long, someone is setting out mugs, another is slicing fruit, and the first question of the morning is already being asked: "What's for breakfast?"
Tahoe Brunch Casserole was made for mornings exactly like these.
There is something wonderfully practical about a breakfast that does most of its work before the day even begins. Everything is assembled the night before, tucked into the refrigerator, and ready for the oven the next morning. By the time everyone wanders into the kitchen, breakfast is already well underway, leaving more time for conversation and second cups of coffee.
Overnight breakfast casseroles became especially popular in American kitchens during the 1970s, when more families were entertaining at home and make-ahead recipes found a permanent place in community cookbooks and family recipe collections. They offered an easy way to feed a crowd without spending the entire morning standing over the stove, making them a natural choice for Christmas morning, Easter brunch, family reunions, and weekends with overnight guests.
Tahoe Brunch Casserole combines layers of bread, savory Italian sausage, mushrooms, sweet onions, sharp cheddar cheese, and a rich egg custard. Overnight, the bread absorbs the custard, and by morning it bakes into a golden casserole with a tender center and beautifully browned top that is hearty enough to feed a table full of family and friends.
It is the kind of recipe that invites flexibility, too. Fresh fruit on the side brightens the meal, while warm cinnamon rolls or a basket of muffins can turn brunch into a celebration. Leftovers reheat beautifully, making this just as welcome on a Monday morning as it is during a holiday weekend.
Good recipes have a way of earning their place through repetition. They are requested year after year, shared with friends, and tucked into recipe boxes because they never disappoint. Tahoe Brunch Casserole is exactly that kind of recipe. It is dependable, generous, and made for gathering people around the table, which has always been one of the very best reasons to cook.
Until next time, thank you for spending a little time with me. I hope you'll find a recipe to make, a story to enjoy, and maybe learn something new along the way. ♥️
Tahoe Brunch Casserole
Prep Time: 30 minutes, plus overnight refrigeration
Bake Time: 1 hour to 1 hour 15 minutes
Oven Temperature: 350°f
Servings: 8
Ingredients
4 tablespoons butter
12 slices white sandwich bread, crusts removed
1 pound fresh mushrooms, trimmed and sliced
2 cups thinly sliced yellow onion
Salt and freshly ground black pepper, to taste
2 pounds bulk mild Italian sausage
1 pound sharp cheddar cheese, grated
6 large eggs
2½ cups whole milk
1 tablespoon Dijon mustard
1 teaspoon dry mustard
1 teaspoon ground nutmeg
1 teaspoon kosher salt
⅛ teaspoon black pepper
2 tablespoons finely chopped fresh parsley (optional)
INSTRUCTIONS
- Remove the crusts from the bread. Leave the slices whole or cut them into 1-inch cubes, if preferred.
- Melt the butter in a large skillet over medium heat. Add the mushrooms and cook until they have released their moisture and it has evaporated, about 10 minutes. Add the onions and continue cooking for 5 to 8 minutes, or until softened. Season with salt and pepper. If using the same skillet for the sausage, transfer the mushroom and onion mixture to a bowl and set aside. Otherwise, leave it in the skillet until you're ready to assemble the casserole.
- In the same skillet, or in a separate skillet if preferred, cook the sausage over medium heat, breaking it into bite-sized pieces until browned and cooked through. Drain any excess grease.
- Lightly butter or grease a 9 x 13-inch baking dish.
- Arrange half of the bread in the prepared baking dish. Top with half of the mushroom and onion mixture, half of the sausage, and half of the grated cheddar cheese. Repeat the layers with the remaining bread, vegetables, sausage, and cheese.
- In a large bowl, whisk together the eggs, milk, Dijon mustard, dry mustard, nutmeg, kosher salt, and black pepper until well combined.
- Pour the egg mixture evenly over the casserole. Cover tightly and refrigerate overnight.
- The next morning, preheat the oven to 350°F.
- If desired, sprinkle the chopped parsley evenly over the top.
- Bake for 1 hour to 1 hour 15 minutes, or until the center is set, the top is puffed and golden brown, and a knife inserted into the center comes out clean. If the top begins to brown too quickly, loosely tent the casserole with aluminum foil during the final 15 to 20 minutes of baking.
- Let the casserole stand for 5 to 10 minutes before serving.
- For extra richness, lightly butter the bread slices before assembling the casserole, just as the original recipe suggested.
- Serve with fresh fruit, warm crusty rolls, and plenty of hot coffee.
Notes from Stasia Boschetti | Culinary writer
New recipes, regional food stories, old cookbooks worth reading, and the history behind familiar American dishes, gathered into a letter from my kitchen desk.
Stasia Boschetti is an American culinary writer, former caterer, recipe developer, and founder of American Country Living. With a deep love for the food, stories, and traditions that make a kitchen feel like home, she writes from personal experience and a genuine appreciation for the way cooking connects us to family, place, and the past. Through practical recipes, regional dishes, food history, and heirloom cooking, Stasia shares the warmth, character, and everyday beauty of American country cooking.
