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Chewy Baked Oatmeal Casserole with Berries and Cinnamon

At Fit Foodie Finds, oatmeal is our specialty — we’ve been perfecting it for over a decade. This is our classic baked oatmeal: a nutritious, cozy breakfast that feels like dessert in the morning. It’s ideal for family weekends or a simple make-ahead meal.

This baked oatmeal combines rolled or quick-cooking oats with mashed banana, eggs, almond milk, a little maple syrup and a pinch of cinnamon. For variety I divided the casserole into four quadrants and topped each section differently — a fun way to serve picky eaters.

A baking dish with four sections of baked oatmeal topped with chocolate chips, banana slices, mixed berries, and peanut butter with peanuts. A spatula rests on one section.

Featured Comment

“These were great….I added coconut and chia seeds….they were hearty and just the right amount of sweetness.” – Noelle

How to Make Baked Oatmeal (+ cups!)

This recipe is incredibly simple. Everything mixes right in the baking dish—no extra bowls required:

  1. Mash banana & add wet ingredients: Mash the banana in the bottom of the casserole dish, then add eggs, vanilla, milk, maple syrup and melted coconut oil; stir to combine.
  2. Add dry ingredients: Stir in oats, flour, baking powder and cinnamon until evenly incorporated.
  3. Add toppings: Wipe the dish edges, then top with your favorites (see topping suggestions below).
  4. Bake: Bake at 350ºF for about 25–30 minutes or until set in the center.

Turn Them into Baked Oatmeal Cups

Line a muffin tin with liners and spray them lightly. Fill each liner about 3/4 full and bake at 350ºF for 18–20 minutes for portable oatmeal cups.

oatmeal, eggs, flour, banana, milk, and maple syrup

Variations for Baked Oatmeal

Mix-ins and toppings make this recipe endlessly adaptable. Try any of the following:

  • Chocolate chips
  • Fresh or frozen fruit (berries, apples, banana slices)
  • Shredded coconut
  • Chopped nuts
  • Peanut butter or other nut butters
baked oatmeal in casserole dish

Can you use quick-cooking oats instead?

Yes. Both rolled oats and quick-cooking oats work well in baked oatmeal. Quick oats will yield a slightly softer texture, while rolled oats give a chewier bite.

Should baked oatmeal be refrigerated?

It’s best stored in the refrigerator. Baked oatmeal can sit out overnight, but it will keep and stay fresher for longer when refrigerated.

A delicious baked oatmeal, bursting with chocolate chips, sliced bananas, berries, and nuts. A spatula gracefully lifts a portion of this comforting dish.

How to Store Baked Oatmeal

After the bake cools completely, slice into portions and store in an airtight glass container. Keep in the refrigerator for up to five days. Oatmeal cups can be stored the same way and reheated as needed.

A plate with a slice of banana baked oatmeal, freshly baked, topped with chocolate chips and a peanut butter drizzle. A fork rests on the plate, accompanied by vibrant blueberries and a raspberry on the side.

More of our Favorite…

Baked Oatmeal Recipes

  • Strawberry Rhubarb Baked Oatmeal
  • Peanut Butter Banana Baked Oatmeal
  • Apple Cinnamon Baked Oatmeal
  • Banana Berry Baked Oatmeal
  • Berry Dark Chocolate Oatmeal Bake
  • Lemon Blueberry Vegan Baked Oatmeal
  • Pumpkin Baked Oatmeal

Best Baked Oatmeal Recipe

Use this easy baked oatmeal recipe for a hearty breakfast packed with whole grains and fiber. Made with oats, banana, eggs, a touch of maple and almond milk.

By: Lee Funke

Prep: 15 mins

Cook: 30 mins

Total: 45 mins

Servings: 4

A dish of baked oatmeal is adorned with four tempting toppings: chocolate chips, banana slices, berries, and peanuts drizzled with peanut butter. A serving is being carefully lifted with a spatula, showcasing its delicious layers.

Ingredients

Wet

  • 2 large bananas, mashed (~1 cup mashed)
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 2 tablespoons maple syrup
  • 1 cup unsweetened plain almond milk
  • 2 tablespoons melted coconut oil

Dry

  • 2 cups quick-cooking oats (or rolled oats)
  • 1/2 cup white whole wheat flour (or any flour)
  • 1 teaspoon baking powder
  • 1 teaspoon cinnamon

Toppings (for 4 quadrants)

  • 1/4 cup chocolate chips
  • 1/2 medium banana, sliced
  • 1 tablespoon peanut butter
  • 1 tablespoon salted peanuts
  • 1/3 cup mixed berries

Instructions

  1. Preheat oven to 350ºF and spray an 8×8-inch baking dish with nonstick spray.
  2. Place mashed bananas in the bottom of the dish and break them up with a fork. Add the eggs, vanilla, maple syrup, almond milk and melted coconut oil; mix to combine.
  3. Add the oats, flour, baking powder and cinnamon; stir until evenly mixed.
  4. Wipe the edges of the dish, top the batter with your chosen toppings (or divide into four topping sections), and smooth the surface.
  5. Bake at 350ºF for 25–30 minutes, or until set in the center. Remove from the oven and let cool before slicing.

Tips & Notes

  • To make oatmeal cups, fill muffin liners about 3/4 full and bake at 350ºF for 18–20 minutes.
  • Nutrition values do not include toppings.
  • Recipe and photos were updated in February 2025.

Nutrition

Calories: 320 kcal, Carbohydrates: 48 g, Protein: 9 g, Fat: 12 g, Fiber: 6 g, Sugar: 15 g (approximate; excludes toppings).

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