Easy Slow Cooker Croissant Breakfast Casserole Tips, FAQ & printable recipe

Tips for success

For a more intense flavor, consider lightly toasting the croissant pieces in the oven for a few minutes before adding them to the slow cooker. This extra step helps them maintain their texture and prevents the casserole from becoming too soft.

Additionally, ensure the ham is of good quality, as it is a primary source of seasoning for the dish. If the ham is particularly salty, you may want to reduce or omit any added salt.

The resting period after cooking is crucial for the structure of the casserole. Allowing it to sit for at least 10 minutes helps the egg custard finish setting and makes it significantly easier to slice into clean, beautiful portions.

If you find the top is not browning enough for your preference, you can transfer the finished casserole to a baking dish and place it under the oven broiler for 2-3 minutes, watching closely to prevent burning.

Variations

• Spinach and Mushroom: Sauté 2 cups of fresh spinach and 1 cup of sliced mushrooms until dry, then add them along with the ham. This adds earthy flavors and a vibrant color to the breakfast bake.
• Spicy Sausage: Replace the diced ham with 1 cup of browned, crumbled breakfast sausage. For extra heat, add a pinch of red pepper flakes into the egg custard before pouring it over the croissants.

Storage and make-ahead

Fridge

Store in an airtight container for up to 3 days.

Freezer

Freeze portions in airtight containers for up to 1 month; thaw overnight in the refrigerator.

Reheat

Reheat in the microwave or oven until the internal temperature reaches 165°F (74°C).

Allow any leftovers to cool completely at room temperature for no more than 2 hours before transferring them to an airtight container. Keep the container in the refrigerator to maintain freshness.

For the best quality, consume the stored leftovers within 3 days. When reheating, ensure the food is heated thoroughly to an internal temperature of 165°F (74°C) to ensure safety and restore the desired texture of the egg and bread components.

While this dish is best prepared fresh, you can assemble the components in the slow cooker insert the night before and keep it in the refrigerator.

However, do not add the egg custard until just before you are ready to start the cooking process, as the croissants will become overly soggy if they sit in the liquid for too long. Alternatively, you can pre-tear the croissants and dice the ham, keeping them in separate containers until assembly time.

Serving ideas

Serve this casserole hot, straight from the slow cooker for a casual brunch atmosphere. Because the eggs may be served soft, ensure they are cooked to the safe temperature of 160°F (71°C) throughout. Use a wide spatula to lift the slices, ensuring you get a good mix of the crispy edges, the savory ham, and the soft, custard-soaked center.

For a more polished presentation, you can serve individual slices on warm plates. Garnish with a sprinkle of fresh herbs like chives or parsley if you desire a pop of color, though the casserole itself is visually appealing with its golden, puffed surface. Ensure each guest receives a portion that includes both the savory ham and the melted cheese for the best experience of the flavor profile.

Frequently asked questions

Recipe card

Easy Slow Cooker Croissant Breakfast Casserole

Prep 10 minCook 3 hRest 10 minTotal 3 h 20 minServes 6

Ingredients

• 6 large buttery croissants, torn into bite-sized pieces
• 1 cup diced ham
• 1 cup shredded Gruyere cheese
• 8 large eggs, whisked

Instructions

1. Place the torn pieces of buttery croissants into the bottom of a clean, dry slow cooker. Arrange them evenly to create a uniform base for the casserole ingredients.
2. Scatter the diced ham uniformly over the torn croissants. Follow this by sprinkling the shredded Gruyere cheese across the top of the ham and croissant layer.
3. Whisk the eggs thoroughly in a glass measuring cup until completely combined. Pour the mixture evenly over the ingredients in the slow cooker. Cover and cook on low for 3 hours until the eggs reach an internal temperature of 160°F (71°C).

Contains: gluten, eggs, milk

Food safety: The eggs in this dish may be served soft. Use pasteurised eggs for pregnant women, young children, older adults, and anyone with a weakened immune system.

Estimated nutrition per serving

Calories

420

Protein

18 g

Carbohydrates

28 g

Fat

26 g

Fiber

1.2 g

Sugar

5 g

Sodium

650 mg

Automatic estimate from the ingredient list, not laboratory-verified.