Tahoe Brunch Casserole Recipe: This Breakfast Casserole Never Gets Old by Jan Mostrom

Tahoe Brunch Casserole Recipe: This Breakfast Casserole Never Gets Old

Everyone likes to brunch! I make this delicious Tahoe brunch casserole recipe every time I have a large group to feed. The casserole recipe is easy to make and everyone always sings its praises after one bite. This easy brunch or breakfast casserole is so adaptable (see Recipe Notes)! Any way you make it, this is a crowd pleaser, for sure.

The budget-friendly casserole is made with butter, white bread, fresh mushrooms, yellow onions, Italian sausage, cheddar cheese, eggs, milk, Dijon mustard, ground mustard and nutmeg. The casserole is layered then baked until melted, hot and bubbly. Delicious! Add a side of fresh fruit and a pitcher of orange juice for a wonderful meal.

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Cuisine: American
Prep Time: 40 minutes plus time to chill (up to overnight)
Cook Time: 1 hour and 15 minutes
Total Time: 1 hour and 55 minutes
Servings: 12


  • 3 tablespoons butter, softened
  • 12 slices white bread, crusts removed
  • 1/2 cup (1 stick) butter
  • 8 ounces fresh mushrooms, sliced
  • 2 cups thinly sliced yellow onions
  • 1 1/2 pounds mild Italian sausage
  • 1 pound (16 ounces) cheddar cheese, grated
  • 5 large eggs
  • 2 1/2 cups milk
  • 1 tablespoon Dijon mustard
  • 1 teaspoon mustard powder
  • 1 teaspoon ground nutmeg
  • 2 tablespoons flat-leaf parsley, finely chopped (optional)

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Recipe Notes

  • If you don't eat pork, use a chicken or turkey sausage. 
  • Feeding a lot of kids? Just leave out the mushrooms! (That's what I did this time!) 
  • If you like a little more spice, use hot Italian sausage instead of mild.

Here's how to make it: 

  1. Butter the bread with the 3 tablespoons softened butter and set aside.
  2. In 10-inch skillet, melt the 1/2 cup butter. Brown the mushrooms and onions over medium heat for 5 to 8 minutes or until tender. Season with salt and pepper, to taste. Set aside.
  3. Remove casings and cook the sausage. Drain well and cut or crumble into bite-sized pieces.
  4. Grease a 13x9-inch baking dish. Add and layer half of the bread, mushroom mixture, sausage and cheese. Repeat the layers, ending with the cheese.
  5. Mix the eggs, milk, mustards, nutmeg, 1 teaspoon salt and 1/8 teaspoon pepper in a medium-sized mixing bowl.
  6. Pour over the sausage and cheese casserole. Cover the casserole and refrigerate overnight.
  7. When ready to cook, sprinkle with parsley, if desired. Bake in a preheated 350-degree F oven uncovered for about 1 hour or until bubbly.

Nutrition Facts Per Serving

Calories: 509

Total Fat: 22.5g

Saturated Fat: 10.1g

Cholesterol: 196mg

Sodium: 995mg

Total Carbohydrate: 56.5g

Dietary Fiber: 3.8g

Total Sugars: 7.6g

Protein: 20.9g

Vitamin D: 256mcg

Calcium: 272mg

Iron: 7mg

Potassium: 465mg

Recipe cooking times, nutritional information and servings are approximate and provided for your convenience. However, 30Seconds is not responsible for the outcome of any recipe, nor may you have the same results because of variations in ingredients, temperatures, altitude, errors, omissions or cooking/baking abilities. This recipe has been analyzed by VeryWellFit. However, any nutritional information is provided as a courtesy and it is up to the individual to ascertain accuracy. To ensure image quality, we may occasionally use stock photography.

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I just drooled a little. So simple and a real crowd pleaser of a recipe!
Elisa Schmitz
OMGoodness, Jan Mostrom , this looks amazing! What a great recipe to serve for any special occasion (or any Sunday brunch)! #yum
Hi Jan! Wondering if the bread should be stale/partially dried?
I second Cassiday's drooling. And Elisa Schmitz, 30Seconds's #yum!
Happy Easter to all!
Jan Mostrom
Hi Terry! No need to stale at all but if you wanted to try it wouldn't hurt either! My french toast casserole calls for stale bread but with this one I've always used fresh. LMK if you try it!
Joe Davis
Just made this for Easter breakfast. Only change I made was that I left the crust on the bread. Turned out great!

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