Table of Contents
Introduction: Protein French Toast Casserole
Start your day with a delightful and hearty breakfast that combines the classic flavors of French toast with a protein boost. Our High Protein French Toast Casserole is not only delicious but also perfect for those looking to increase their protein intake while enjoying a comforting meal. This casserole is a crowd-pleaser, ideal for family gatherings or a cozy morning at home. For more inspiration, check out Cinnamon French Toast Casserole. For more inspiration, check out Protein Cinnamon Roll Baked Oatmeal.
Whether you’re planning a weekend brunch or need a meal prep breakfast option for the week, this dish has you covered. Combining simplicity with nutrition, it’s a favorite for those who love traditional, hearty American flavors.
Why You’ll Love This Recipe
Our Protein French Toast Casserole is an all-American dish that brings comfort to your table with every bite. Packed with protein, this recipe will keep you full and satisfied throughout the morning. It’s an easy breakfast casserole that requires minimal preparation, making it ideal for busy mornings. The combination of tender bread soaked in a rich protein custard and baked to perfection ensures each slice is a delightful treat.
Perfect for Meal Prep
This casserole is an excellent choice for meal prep. You can make it ahead of time, store it in the refrigerator, and enjoy it throughout the week. Simply reheat a slice in the morning for a quick, nutritious start to your day. The casserole’s versatility also allows you to customize it with your favorite add-ins, ensuring you’ll never tire of this delicious breakfast option.

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Ingredients
Essential Ingredients
For this protein-packed brunch dish, you’ll need a few essential ingredients that are likely already in your pantry. The main components include high-protein bread, eggs, milk, protein powder, and a touch of vanilla extract for flavor. These ingredients come together to create a custard-like mixture that soaks into the bread, resulting in a moist and flavorful casserole.
Optional Add-ins
Feel free to get creative with this recipe by adding your favorite ingredients. Consider incorporating fruits like blueberries or sliced bananas for natural sweetness. You can also add nuts or seeds for an extra crunch and a nutrient boost. Spices such as cinnamon or nutmeg can enhance the dish’s flavor, making each bite more delightful.

Step-by-Step Instructions
Preparing the Bread
To start, choose a high-protein bread that will hold up well during baking. Cut the bread into cubes and arrange them in a greased baking dish. This step ensures even soaking of the custard and a consistent texture throughout the casserole.
Mixing the Protein Custard
In a large mixing bowl, whisk together eggs, milk, vanilla extract, and protein powder until smooth. Pour the mixture evenly over the bread cubes, ensuring each piece is well-coated. Allow the mixture to sit for 10-15 minutes, so the bread absorbs the custard fully.
Baking to Perfection
Preheat your oven to 350°F. Place the baking dish in the oven and bake for 45-50 minutes, or until the top is golden brown and the custard is set. Remove from the oven and let it cool slightly before serving warm.
Pro Tips
Elevate your Protein French Toast Casserole with these pro tips:
- Choose a dense, sturdy bread to prevent sogginess.
- Slightly stale bread works best since it soaks up the custard more effectively.
- Experiment with different spices such as cardamom or ginger for unique flavors.
- Adjust the sweetness by adding a touch of maple syrup or honey to the custard.
The most important tip is to let the custard soak into the bread thoroughly. This step ensures a moist and flavorful casserole that everyone will enjoy.
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Nutritional Information
Calorie Count and Macronutrients
Each serving of this Protein French Toast Casserole provides a balanced nutritional profile, making it an excellent choice for a high protein breakfast. With approximately 320 calories per slice, it includes healthy carbohydrates, proteins, and fats to fuel your morning activities. The inclusion of protein powder enhances the protein content, making it ideal for those following a fitness regimen.
Serving Suggestions
Pairing with Fresh Fruits
Enhance the flavor and nutritional value of your casserole by serving it with a variety of fresh fruits. Berries, bananas, and apple slices are all excellent choices that complement the sweet and savory notes of the dish. These fruits add freshness and a burst of color to your plate.
Best Toppings for Extra Flavor
Consider topping your casserole with a dollop of Greek yogurt, a sprinkle of nuts, or a drizzle of almond butter for added richness. These toppings not only enhance the flavor but also increase the protein content, making your meal even more satisfying.
For more breakfast inspiration, check out our High Protein Greek Yogurt Bagels or try a delicious Protein Mug Cake.

Protein French Toast Casserole
Equipment
- 1 9×13 inch baking dish greased
- 1 whisk
- 1 mixing bowl large
Ingredients
Custard
- 8 large eggs
- 2 cups milk
- 1/2 cup protein powder
- 1 tsp vanilla extract
- 1/4 cup maple syrup
Casserole
- 8 cups high-protein bread cubed
- 1/2 cup fresh blueberries
Instructions
Preparation
- Cut the bread into cubes and place them in a greased 9×13-inch baking dish.
- In a large mixing bowl, whisk together the eggs, milk, protein powder, vanilla extract, and maple syrup until well combined.
- Pour the custard mixture over the bread cubes, ensuring all pieces are soaked. Let it sit for 15 minutes.
- Sprinkle fresh blueberries evenly over the top of the soaked bread.
Baking
- Preheat the oven to 350°F (175°C). Bake the casserole for 45-50 minutes, or until the top is golden brown and the custard is set.
Serving
- Allow to cool slightly before serving. Enjoy warm with your favorite toppings.
Storage
- Store any leftover casserole in an airtight container in the refrigerator for up to 4 days.
Notes
Ingredient Substitutions: Almond milk can replace regular milk for a dairy-free option.
How to Serve: Top with Greek yogurt and fresh fruit for added flavor.
Storage & Freshness: Store in the fridge for up to 4 days.
Make-Ahead Tips: Prepare the night before and bake in the morning for a fresh breakfast.
FAQ
Can I make this casserole dairy-free?
Yes, you can easily make this Protein French Toast Casserole dairy-free by substituting the milk with a plant-based milk like almond milk or soy milk. Ensure that your protein powder is also dairy-free if needed. The flavors will remain delicious, and the texture will still be just right for a satisfying breakfast.
How can I store leftover French Toast Casserole?
To store leftovers, place the cooled casserole in an airtight container and refrigerate it for up to four days. You can reheat individual slices in the microwave or oven. For longer storage, consider freezing the casserole in portions. When ready to eat, simply thaw overnight in the refrigerator and reheat before serving.
What are some good toppings for this casserole?
There are many delicious toppings you can add to your Protein French Toast Casserole. Consider fresh berries, a sprinkle of powdered sugar, a drizzle of maple syrup, or a dollop of Greek yogurt. For a nutty crunch, try adding sliced almonds or chopped walnuts. These toppings enhance both the flavor and presentation of your dish.
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