Baked Banana Protein French Toast
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Most vegan french toast recipes give you soggy bread with not much protein. This baked banana protein french toast fixes that. You blend ripe bananas with pea protein and almond milk into a thick custard, pour it over sourdough cubes, and bake the whole thing at 425°F until the top gets golden and crispy. The result: 28g of protein per serving, a texture that holds up to meal prep, and enough natural sweetness from the bananas that you barely need added sugar.
This one came from MealThinker. I told it I had overripe bananas, sourdough, and pea protein and it came back with this. The technique is closer to a bread pudding than traditional french toast. That means less hands-on time (no flipping individual slices), more even cooking, and edges that get genuinely crunchy while the center stays custardy. Also, if you’re into peanut butter banana protein pancakes, you’ll recognize the flavor profile here. Same energy, different format.
Why Does This Vegan Protein French Toast Actually Work?
Pea protein powder does more than add grams to the nutrition label. When you bake it into a custard base, it acts as a structural binder. The proteins denature in the oven and firm up, which is why this casserole holds its shape when you cut it into portions instead of falling apart like a lot of egg-free french toast recipes do.
Ground flax serves a similar purpose. Mixed with liquid, it forms a gel that mimics the binding quality of eggs. Between the flax and the protein powder, you get a batter that actually clings to the bread and sets during baking. Furthermore, the bananas aren’t just there for flavor. They add natural sugars that caramelize at high heat, giving you those dark golden edges without needing to load up on maple syrup.
Sourdough is the right call for this recipe. Its dense crumb absorbs the batter without disintegrating, and the slight tang balances the sweetness of the bananas and cinnamon. In contrast, softer breads like white sandwich bread would turn to mush. If you enjoy hearty breakfast bakes, also check out this mixed berry protein baked oatmeal for another high-protein morning option.
Baked Banana Protein French Toast Ingredients
Everything here is straightforward and easy to find. The protein powder is the only specialty ingredient, and most grocery stores stock it now.
- Sourdough bread (8 thick-cut slices) – the dense crumb holds up to soaking. Day-old bread works even better because it’s drier and absorbs more custard.
- Ripe bananas (2) – they need to be spotty and soft. Underripe bananas won’t blend smooth and lack the sweetness you need.
- Unsweetened almond milk (1 1/2 cups) – any plant milk works, but unsweetened keeps the sugar in check.
- Pea protein powder (1/2 cup) – unflavored or vanilla. This adds structure and 28g protein per serving.
- Ground flax (2 tbsp) – acts as a binder when it absorbs liquid.
- Maple syrup (2 tbsp) – just enough to round out the sweetness. The bananas do most of the heavy lifting.
- Cinnamon (1 tsp) – classic french toast flavor.
- Salt (1/4 tsp) – balances sweetness and enhances all the other flavors.
- Coconut oil (1 tbsp) – for greasing the pan. Prevents sticking and adds a subtle richness to the edges.
- Peanut butter (1/4 cup, for serving) – drizzle it warm over the top. Adds healthy fats and extra protein.
- Frozen strawberries (1/2 cup, warmed, for serving) – microwave them for 30 seconds until they release their juices.
How to Make Baked Protein French Toast
- Preheat and prep. Set your oven to 425°F. Tear or cube 8 slices of thick-cut sourdough into roughly 1-inch pieces. Grease a 9×13 baking dish with 1 tbsp coconut oil.
- Blend the custard. In a blender, combine 2 ripe bananas, 1 1/2 cups unsweetened almond milk, 1/2 cup pea protein powder, 2 tbsp ground flax, 2 tbsp maple syrup, 1 tsp cinnamon, and 1/4 tsp salt. Blend for about 30 seconds until completely smooth. The batter should be thick but pourable.
- Assemble the casserole. Spread the sourdough cubes evenly across the greased baking dish. Then pour the blended custard over the bread, pressing down gently so every piece soaks up the liquid. Let it sit for 5 minutes so the bread fully absorbs the batter.
- Bake. Place in the oven uncovered and bake for 20-22 minutes. You’ll know it’s done when the top is golden and the center is set (not jiggly when you shake the pan). The edges should look noticeably crispy.
- Serve. Cut into 4 equal portions. Drizzle each serving with 1 tbsp peanut butter and top with warmed strawberries.
Tips for the Best Vegan Banana French Toast
- Use day-old bread. Stale sourdough absorbs the custard better than fresh bread. If yours is fresh, spread the cubes on a sheet pan and let them sit out for an hour, or toast them in the oven at 300°F for 5 minutes first.
- Don’t skip the 5-minute soak. This rest time lets the custard penetrate all the way through each bread cube. Rush it and you’ll get dry spots in the middle.
- Check the center, not just the edges. Edges will brown first. Give the pan a gentle shake around the 18-minute mark. If the center still wobbles, give it another 2-4 minutes.
- Pea protein matters. It adds both structure and nutrition. Other protein powders (like rice or hemp) will work but may produce a slightly different texture. Whichever you use, make sure it’s unflavored or vanilla.
- Warm the peanut butter before drizzling. Microwave it for 15 seconds so it’s runny enough to distribute evenly across each serving.
How to Store Protein French Toast Casserole
This recipe is built for meal prep. Let the casserole cool completely, then cut into individual portions and store in airtight containers in the fridge for up to 4 days. To reheat, use an air fryer or oven at 375°F for 3-5 minutes. This brings back the crispy edges and keeps the texture intact. Avoid the microwave if you can; it makes the bread soft and a little rubbery. You can also freeze individual portions for up to 2 months. Thaw overnight in the fridge, then reheat using the air fryer method.
Vegan Protein French Toast Variations
- Blueberry version: Scatter 1/2 cup fresh or frozen blueberries over the bread cubes before pouring the custard. They’ll burst during baking and create pockets of fruity sweetness.
- Chocolate chip: Add 2 tbsp dairy-free chocolate chips on top before baking. They melt into the surface and make this taste like dessert for breakfast.
- Almond butter swap: Replace the peanut butter with almond butter for serving. The flavor is more subtle and pairs well with the banana and cinnamon.
- Gluten-free option: Use thick-sliced gluten-free sourdough or a sturdy gluten-free bread. Make sure it’s dense enough to hold up to the custard without falling apart. For more banana breakfast ideas, try these vegan banana pancakes.
Banana Protein French Toast FAQ
Can I use a different protein powder?
Yes. Rice protein and soy protein both work as substitutes. Pea protein gives the best structure because of how it binds when heated, but rice protein is the closest alternative. Avoid hemp protein on its own since it can taste grassy and doesn’t bind as well. Use the same 1/2 cup measurement regardless of type.
How do I make this banana french toast without protein powder?
Replace the 1/2 cup protein powder with 1/4 cup chickpea flour. It won’t hit the same protein numbers, but chickpea flour binds well and adds a neutral flavor that disappears in the final dish. You’ll get around 12g protein per serving instead of 28g.
Can I assemble this the night before?
Yes, and it actually works better that way. Assemble everything in the baking dish, cover tightly with plastic wrap or a lid, and refrigerate overnight. The longer soak means even more custard absorption. In the morning, bake straight from the fridge but add 3-5 extra minutes to the bake time since the dish will be cold.
What bread works best besides sourdough?
French bread (baguette) and ciabatta both work well because of their dense, chewy crumb. Whole wheat bread works too but will taste heavier and more earthy. Stay away from anything too soft or thin, like regular sliced sandwich bread, which will disintegrate in the custard.
This baked banana protein french toast is one of those recipes that genuinely gets better with time. It meal preps like a champ, reheats without losing its texture, and delivers serious protein without tasting like a supplement. The banana custard, crispy sourdough edges, and that peanut butter drizzle on top all come together into something that feels indulgent but is actually fueling you. If you’re looking for more high-protein breakfast ideas, check out this high-protein oatmeal or this classic vegan french toast casserole.
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More Vegan Breakfast Recipes
- Vegan French Toast Casserole
- Peanut Butter Banana Protein Pancakes
- Mixed Berry Protein Baked Oatmeal
- Vegan Banana Pancakes
- High-Protein Oatmeal (50g Protein)
Baked Banana Protein French Toast
Equipment
- Blender
- 9x13 inch baking dish
Ingredients
French Toast
- 8 slices sourdough bread thick cut
- 2 ripe bananas
- 1 1/2 cups unsweetened almond milk
- 1/2 cup pea protein powder unflavored or vanilla
- 2 tbsp ground flax
- 2 tbsp maple syrup
- 1 tsp cinnamon
- 1/4 tsp salt
- 1 tbsp coconut oil for greasing pan
For Serving
- 1/4 cup peanut butter
- 1/2 cup frozen strawberries warmed
Instructions
- Preheat oven to 425°F. Tear or cube 8 slices of thick-cut sourdough into roughly 1-inch pieces. Grease a 9x13 baking dish with 1 tbsp coconut oil.
- In a blender, combine 2 ripe bananas, 1 1/2 cups unsweetened almond milk, 1/2 cup pea protein powder, 2 tbsp ground flax, 2 tbsp maple syrup, 1 tsp cinnamon, and 1/4 tsp salt. Blend for about 30 seconds until completely smooth.
- Spread the sourdough cubes evenly across the greased baking dish. Pour the blended custard over the bread, pressing down gently so every piece soaks up the liquid. Let sit for 5 minutes.
- Bake uncovered for 20-22 minutes until the top is golden and the center is set (not jiggly). Edges should look crispy.
- Cut into 4 portions. Drizzle each serving with 1 tbsp peanut butter and top with warmed strawberries.