Mushroom, Thyme & Gruyere Cheese Breakfast Casserole

C4Bimbos's picture

Mar. 13, 2014

Who doesnt love a good breakfast casserole?! I wish I was joking when I say after I made this, I ate half of the pan.half.It is SO unbelievably good you guys, I cant even express it in words. All I can say is make it and you will understand. This is a great recipe to make ahead of time and the pop it in the oven when youre ready to eat. Perfect for a savory brunch. Its light and fluffy but packed with flavor.


Cubed baguette 8 Cup (128 tbs) ((1 day old))
Butter 1 Tablespoon
Mushrooms 8 Ounce , cleaned and sliced
Yellow onion 1/2 , diced small
Whole milk 1 1/2 Cup (24 tbs)
Eggs 8
Fresh thyme leaves 1 Tablespoon
Dry mustard 1/2 Teaspoon
Ground nutmeg 1/4 Teaspoon
Salt and pepper To Taste
Gruyere cheese 1 Cup (16 tbs) , freshly grated
For greasing
Butter 1 Tablespoon ((For greasing))



1.Preheat the oven to 350 degrees F. Grease a baking pan with butter and set aside.


2.Into the prepared baking pan, lay down the baguette. Set aside.

3.In a pan, add in the butter, onions, mushrooms, and a pinch of salt and pepper. Sauté over medium high until brown.

4.In a large jar, whisk together the milk, eggs, thyme, mustard powder, nutmeg, salt, and pepper.

5.Top the baguette with mushroom and pour in the milk mixture over the top.

6.Sprinkle gruyere over the bread and bake for 25 minutes.

7.Take out the casserole and cool for a few minutes before serving.


8.Serve the casserole alongside a mimosa or Bloody Mary of course.

Recipe Summary

Difficulty Level: Easy
Cook Time: 35 Minutes
Ready In: 35 Minutes
Servings: 8

Nutrition Facts

Serving size

Calories 769Calories from Fat 138

 % Daily Value*

Total Fat 15 g23.1%

Saturated Fat 7 g35%

Trans Fat 0 g


Sodium 1473 mg61.38%

Total Carbohydrates 123 g41%

Dietary Fiber %

Sugars 3 g

Protein 31 g62%

Vitamin A % Vitamin C %

Calcium % Iron %

*Based on a 2000 Calorie diet