Description
A decadent and cheesy casserole that combines multiple types of cheese and layers of sourdough bread, perfect for a comforting meal.
Ingredients
Scale
- 12 slices thick-cut sourdough bread, crusts on
- 1 1/2 cups shredded sharp cheddar cheese
- 1 cup shredded Gruyère cheese
- 1 cup shredded mozzarella cheese
- 1/2 cup cream cheese, softened
- 1 1/2 cups whole milk
- 3 large eggs
- 1 tablespoon Dijon mustard
- 4 tablespoons unsalted butter, melted
- 2 large heirloom tomatoes, sliced
- 1 small red onion, thinly sliced
- 6 strips cooked bacon, chopped (optional; omit for vegetarian)
- 1/2 cup baby spinach leaves
- 1/4 cup chives or green onions, thinly sliced
- 1 teaspoon garlic powder
- 1 teaspoon smoked paprika
- 1/2 teaspoon salt
- 1/2 teaspoon black pepper
Instructions
- Preheat oven to 375°F. Lightly grease a 9×13-inch casserole dish with butter or nonstick spray.
- In a large mixing bowl, whisk eggs, whole milk, Dijon mustard, garlic powder, smoked paprika, salt, and black pepper until fully combined.
- Arrange 6 slices of sourdough bread in the base of the casserole dish, trimming to fit as needed. Evenly spread half the softened cream cheese over the bread slices.
- Distribute half of the sharp cheddar, Gruyère, and mozzarella cheeses evenly over the bread. Add half of the sliced tomatoes, red onion, spinach leaves, and chopped bacon if using.
- Repeat with remaining bread slices, cream cheese, shredded cheeses, tomatoes, red onion, spinach, and bacon to create a second layer.
- Pour the egg and milk mixture evenly over the entire casserole. Gently press down on the layers to help the bread absorb the liquid.
- Drizzle melted unsalted butter over the top layer. Sprinkle with chives or green onions.
- Cover casserole with foil and bake for 25 minutes.
- Remove foil and bake an additional 10 minutes, until golden brown and bubbling.
- Allow casserole to rest for 5 to 10 minutes before slicing into squares. Serve warm.
Notes
- For a vegetarian option, omit the bacon.
- This casserole can be prepped ahead of time and stored in the refrigerator before baking.
- Customize the cheeses and add-ins based on personal preference.
- Prep Time: 20 minutes
- Cook Time: 35 minutes
- Category: Casserole
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 square
- Calories: 450
- Sugar: 5g
- Sodium: 800mg
- Fat: 30g
- Saturated Fat: 15g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 35g
- Fiber: 2g
- Protein: 20g
- Cholesterol: 150mg