High Protein Banana Bread Baked Oatmeal (Easy Meal Prep Breakfast)

There are two kinds of mornings. The slow cozy ones… and the ones where you need food immediately but still want it to feel like you tried. This recipe exists for the second one.

I make this at the start of the week and it quietly solves breakfast all week long. I warm up a slice either first thing in the morning or after a workout, then pile it with peanut butter, a drizzle of syrup, and a scoop of yogurt. It honestly feels like banana bread meets a breakfast bowl, and it actually keeps me full instead of sending me back into the kitchen an hour later.

It tastes comforting, it reheats perfectly, and it’s the kind of meal prep that doesn’t feel like meal prep. Just bake once, slice into six, and future you is handled.

Ingredient Breakdown

• Old Fashioned Oats: Oats are the entire structure of baked oatmeal. They absorb liquid while baking and give you that soft sliceable texture instead of scrambled oat soup. Old fashioned oats work best because they keep some chew and don’t turn mushy. They also provide slow digesting carbs and fiber that keeps you full longer.
• Overripe Bananas: The spottier the banana, the sweeter the result. They naturally sweeten the recipe and add moisture so you don’t need much oil or butter. Bananas also help bind everything together. Plus they give that classic banana bread flavor without needing extracts.
• Vanilla Protein Powder: This is what turns it from snack to breakfast. It boosts protein while also adding sweetness and vanilla flavor. Most powders also help with structure once baked. It’s basically the reason you stay full until lunch instead of thinking about food again immediately.
• Milk: Milk adds moisture and protein while helping the oats soften properly. Fairlife works great because it adds extra protein without extra heaviness. You can use any milk but this keeps it lighter and higher protein. It also helps the texture stay fluffy instead of dense.
• Greek Yogurt: Greek yogurt adds creaminess and tenderness. It keeps the oatmeal moist even after refrigeration. The slight tang balances the sweetness and makes it taste more baked good than health food. It also bumps protein even higher.
• Baking Powder: This keeps the baked oatmeal from becoming a brick. It gives a slight lift so slices stay soft and fluffy. Without it the texture would be dense and heavy. Small ingredient, big texture difference.
• Chocolate Chips: Because breakfast should be enjoyable. They melt into little pockets of sweetness that make it taste like banana bread. You don’t need a ton to make a difference. They also help convince your brain this is a treat and not a responsibility.
• Eggs: Eggs bind everything together and provide structure so you can slice clean pieces. They also add protein and richness. Without eggs you’d end up with crumbly scoopable oats instead of bars. They’re the backbone of the texture.
• Maple Syrup: Adds sweetness and moisture while keeping the flavor warm and cozy. It pairs perfectly with banana and oats. A little goes a long way because bananas already contribute sweetness. Also helps the top caramelize slightly while baking.

Substitutions & Modifications

• Any milk works (almond, oat, soy, dairy)

• Any Greek yogurt or dairy free yogurt works

• Honey can replace maple syrup

• Add berries, walnuts, or peanut butter chips

• Use chocolate protein powder for a double chocolate version

• Make it dairy free using plant yogurt and milk

Why You’ll Love This Recipe

• Tastes like banana bread but works as breakfast

• High protein and actually satisfying

• Naturally sweetened mostly from bananas

• Easy meal prep for the week

• One bowl situation

• Customizable with mix ins

Equipment Needed

• 9×9 baking dish: Gives you the perfect thickness so the baked oatmeal stays soft in the center and sliceable instead of dry.

• Large mixing bowl: Big enough to mash bananas and mix everything without oats flying onto your counter.

• Fork or potato masher: Helps break down the bananas smoothly so you don’t end up with random banana chunks in one bite and none in the next.

• Whisk: Makes it easier to fully combine the eggs, yogurt, milk, and protein powder without clumps.

• Rubber spatula: Ideal for folding in the oats and chocolate chips and scraping every bit into the pan.

• Measuring cups and spoons: Keeps the texture consistent so it bakes the same every time.

High Protein Banana Bread Baked Oatmeal (Easy Meal Prep Breakfast)

Pin Rate

Prep Time: 5 minutes minutes

Cook Time: 30 minutes minutes

Total Time: 35 minutes minutes

Servings: 6 slices

Calories: 303kcal

Ingredients

• 2 cups old fashioned oats
• 2 overripe bananas
• 2 scoops vanilla protein powder
• 1 cup Fairlife nonfat milk
• ½ cup Oikos Triple Zero Greek yogurt
• 1 teaspoon baking powder
• ¼ cup chocolate chips
• 2 large eggs
• ⅓ cup maple syrup

Instructions

• Preheat oven to 350°F and grease a 9×9 baking dish.
• In a large bowl mash the bananas until smooth.
• Add eggs, milk, yogurt, maple syrup, and protein powder. Whisk until fully combined.
• Stir in oats and baking powder.
• Fold in chocolate chips.
• Pour batter into prepared baking dish and spread evenly.
• Bake 25 to 30 minutes or until a toothpick comes out clean.
• Let cool slightly, slice into 6 pieces, and enjoy.

Nutrition

Calories: 303kcal | Carbohydrates: 47g | Protein: 19g | Fat: 6g | Saturated Fat: 2g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Trans Fat: 0.01g | Cholesterol: 57mg | Sodium: 119mg | Potassium: 415mg | Fiber: 4g | Sugar: 23g | Vitamin A: 188IU | Vitamin C: 3mg | Calcium: 162mg | Iron: 2mg

Storage

Store in an airtight container in the refrigerator up to 5 days.

Reheating

Microwave 60 to 90 seconds
Optional: add splash of milk before reheating for softness

Tips & Tricks

• Very ripe bananas = best flavor

• Let it cool before slicing for clean pieces

• Microwave leftovers with a splash of milk for softness

• Slightly underbake for softer texture

• Sprinkle extra chocolate chips on top before baking for aesthetics

Do you LOVE Easy Meal Prep Recipes?! Check Out More of my Favs:

Hot Honey Sheet Pan Chicken (Easy Weeknight Dinner or Meal Prep!)

High Protein Meal Prep Breakfast Sandwiches recipe

Healthy High Protein Banana Muffins Recipe (VIDEO)

This is the breakfast that makes mornings easier. You bake once, eat all week, and somehow feel both productive and well fed. It tastes like banana bread but works like a balanced breakfast. Reliable, cozy, and low effort which is exactly what weekday mornings need.

Make it once and it will quietly become part of your weekly routine. If you try it, save the recipe and share it with someone who also needs a dependable breakfast. More easy high protein breakfasts are always on the blog.