Easy Sausage and Egg Casserole is a hearty vegan breakfast bake packed with plant-based protein and bold savory flavor. This Easy Sausage and Egg Casserole uses vegan sausage, fluffy egg substitute, and dairy-free cheese to create a satisfying oven-baked dish perfect for meal prep or weekend brunch. It’s simple, filling, and designed for busy mornings.

This high-protein breakfast casserole bakes into firm, sliceable squares with a creamy interior. If you love savory breakfast bakes, try our Biscuits and Gravy Breakfast Casserole or the filling Sausage Hash Brown Breakfast Casserole. The baking method is similar to this classic sausage breakfast casserole technique, fully adapted to be dairy-free and egg-free.

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Why You’ll Love This Recipe

This Easy Sausage and Egg Casserole is protein-rich, meal-prep friendly, and bakes in under 40 minutes, giving you a firm, cheesy, satisfying breakfast without complicated steps.

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Ingredients

Regular (full list):

• 2 cups vegan egg substitute (or blended silken tofu)
• ½ cup unsweetened plant-based milk
• ½ teaspoon salt
• ¼ teaspoon black pepper
• 1 cup vegan shredded cheese
• 1 pound vegan breakfast sausage, cooked and crumbled
• ½ cup diced bell peppers (optional)
• ½ cup diced onions (optional)

Vegetarian (swap only):

• Replace vegan sausage with traditional sausage.
• Use regular eggs instead of egg substitute.
• Use dairy milk and shredded cheese.

Vegan (swap only):

No changes.

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Directions

Regular (full steps):

1. Preheat oven to 350°F (175°C).
2. Grease a 9×13-inch baking dish.
3. Whisk vegan egg substitute, plant-based milk, salt, and pepper until smooth.
4. Stir in cooked vegan sausage, shredded cheese, bell peppers, and onions.
5. Pour mixture evenly into prepared baking dish.
6. Bake for 30–35 minutes until center is fully set.
7. Let rest 5–10 minutes before slicing.

Vegetarian (swap only):

• Follow same steps using egg and dairy substitutions.

Vegan (swap only):

No changes.

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Prep Time And Nutrition Facts

Prep time: 10 minutes. Bake time: 30–35 minutes. Serves 8. Each serving of Easy Sausage and Egg Casserole contains approximately 320–350 calories and 15–18g plant-based protein depending on ingredients used.

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How To Serve Easy Sausage and Egg Casserole

• Top with fresh chopped parsley.
• Serve with sliced avocado.
• Add salsa or hot sauce.
• Pair with roasted breakfast potatoes.
• Serve with Quick Blueberry French Toast Casserole for sweet contrast.
• Enjoy with fresh fruit for balance.

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How To Store Easy Sausage and Egg Casserole

• Refrigerate in airtight container up to 3 days.
• Freeze baked slices up to 2 months.
• Reheat in oven at 350°F for best texture.
• Microwave individual portions if needed.

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Tips To Make Easy Sausage and Egg Casserole

• Cook sausage until slightly crispy for better texture.
• Use unsweetened plant milk only.
• Season egg mixture well before baking.
• Let casserole rest before slicing.
• Add spinach or mushrooms for extra nutrients.
• Use high-quality vegan cheese for better melt.
• Blend silken tofu completely smooth for proper custard texture. (Vegan success tip)
• Choose soy milk for higher protein and firmer structure. (Vegan success tip)

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Health And Benefits Of This Recipe

This casserole is cholesterol-free.

Provides complete plant-based protein from sausage and egg substitute.

Contains calcium from fortified dairy-free cheese.

Bell peppers add vitamin C and antioxidants.

Offers steady energy without heavy saturated fat.

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Variations (If Any)

• Swap sausage for crumbled tofu or tempeh.
• Add jalapeños for heat.
• Use pepper jack–style vegan cheese.
• Mix in chopped spinach or kale.
• Add garlic powder or smoked paprika.

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FAQs

Can I make Easy Sausage and Egg Casserole ahead of time?
Yes, assemble and refrigerate overnight before baking.

How do I prevent a watery casserole?
Avoid excess vegetables with high moisture and measure milk carefully.

Can I freeze before baking?
Yes, wrap tightly and thaw before baking.

How do I know it’s fully baked?
The center should be firm and no longer jiggle.

Can I make it soy-free?
Use almond or oat milk and soy-free sausage alternatives.

Is this high in protein?
Yes, each serving contains solid plant-based protein.

Can I double the recipe?
Yes, use two baking dishes or a larger pan and adjust baking time slightly.

What sides go best?
Fresh fruit, roasted potatoes, or a light green salad pair well.