Overnight Croissant Breakfast Casserole

Looking for a delightful and satisfying vegan breakfast that’s easy to prepare? This Overnight Croissant Breakfast Casserole is a perfect choice!

You can prepare it the night before, allowing the flavors to meld while you sleep, then wake up to a warm, comforting plant-based breakfast. It’s ideal for lazy weekends or brunch gatherings.

Why Make This Recipe

This recipe delivers the buttery texture of vegan croissants combined with a creamy plant-based egg mixture and melty dairy-free cheese. It’s comforting, easy to assemble, and completely customizable with your favorite vegan breakfast proteins and vegetables.

How To Make Overnight Croissant Breakfast Casserole

Ingredients:

6 vegan croissants, torn into pieces
1 ½ cups vegan liquid egg substitute (or blended silken tofu/chickpea flour mixture)
2 cups unsweetened plant-based milk (soy, oat, or almond)
1 cup vegan shredded cheese (cheddar- or Gruyère-style)
½ cup cooked plant-based sausage or vegan ham, crumbled
¼ cup chopped green onions
1 teaspoon salt
½ teaspoon black pepper
1 teaspoon Dijon mustard (vegan)
½ teaspoon garlic powder

Directions:

Preheat the oven to 350°F (175°C).
In a large bowl, whisk together the vegan egg substitute, plant-based milk, salt, pepper, Dijon mustard, and garlic powder until smooth.
In a greased baking dish, layer the torn croissant pieces, plant-based sausage or ham, vegan cheese, and green onions.
Pour the egg mixture evenly over the layers, gently pressing the croissants down so they absorb the liquid.
Cover with foil or a reusable wrap and refrigerate overnight.
In the morning, remove the cover and bake for 30–35 minutes, or until the center is set and the top is lightly golden.
Let cool slightly before serving.

Prep Time And Nutrition Facts

This recipe takes about 10 minutes to prepare and 30–35 minutes to cook, for a total of approximately 45 minutes. It serves 8 people, with each serving containing roughly 340–360 calories, 14–16 grams of plant-based protein, and 22 grams of fat.

How To Serve Overnight Croissant Breakfast Casserole

Serve this casserole warm, garnished with extra green onions or fresh herbs. It pairs beautifully with fresh fruit, roasted potatoes, or a light green salad for a balanced vegan breakfast or brunch.

How To Store Overnight Croissant Breakfast Casserole

Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven at 350°F or microwave individual portions until warmed through.

Tips To Make Overnight Croissant Breakfast Casserole

Add vegetables like bell peppers, spinach, mushrooms, or zucchini for extra flavor and nutrition.
Use day-old vegan croissants for the best texture.
For extra richness, add a splash of dairy-free cream or cashew milk.
Spice it up with red pepper flakes or a dash of hot sauce.

Health And Benefits Of This Recipe

This vegan casserole provides plant-based protein, energy-boosting carbohydrates, and essential nutrients. Fortified plant-based milk and dairy-free cheese contribute calcium and vitamins, while eliminating animal products supports heart health and easier digestion. Adding vegetables boosts fiber and antioxidants for a well-rounded meal.

Variation

Try substituting different breads like vegan brioche or gluten-free rolls. You can also experiment with different dairy-free cheeses or add roasted vegetables such as mushrooms or red peppers for deeper flavor.

FAQs

Can I prepare this casserole without meat?
Yes! Simply omit the plant-based sausage or replace it with extra vegetables.

How can I make this dish dairy-free?
This version is already dairy-free using plant-based milk and vegan cheese.

Can I freeze the casserole?
Yes, freeze it before baking for up to 2 months. Thaw overnight in the refrigerator before baking.

What kind of cheese works best?
Vegan cheddar- or Gruyère-style cheeses melt best, but use your favorite dairy-free option.

How do I know when the casserole is done?
The center should be set and a knife inserted in the middle should come out clean.

Can I leave it in the refrigerator for more than one night?
For best texture and flavor, bake within 24 hours.

How can I add spice to the dish?
Add jalapeños, cayenne pepper, or spicy vegan cheese for extra heat.