Meal Prep Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Baked Oatmeal
A warm, cake-like oatmeal casserole baked with banana and cinnamon that slices into portable squares for the week.
Contains common allergens
In the app, Listahan checks these against your household automatically.
Instructions
6 steps- 1
Preheat the oven to 375°F and lightly coat a 9-by-9-inch baking dish with cooking spray.
- 2
In a large bowl, mash the bananas until mostly smooth, then whisk in the eggs, milk, maple syrup, and vanilla until well combined.
- 3
Add the rolled oats, baking powder, cinnamon, and salt to the wet ingredients, stirring until evenly moistened.
- 4
Pour the mixture into the prepared baking dish, spreading it into an even layer, and let it sit for 5 minutes so the oats begin to absorb the liquid.
- 5
Bake for 32 to 38 minutes, until the top is golden and set and the center no longer jiggles when the dish is gently shaken.
- 6
Cool completely, then cut into 6 squares. Store in an airtight container in the fridge for up to 5 days and reheat individual squares for 45 seconds in the microwave.
Listahan Family Score™
78/100
Good fit for most families
Score reflects how well this recipe fits a typical busy household. In the app, your Family Score is personalized to your household's allergens, kids, and pantry.
Nutrition
per serving495
Calories
19 g
Protein
82 g
Carbs
11 g
Fat
Estimated per serving. Actual values depend on the brands and portions you use.
Listahan cooking guide
Chef notes & practical guide
Technique notes, ingredient swaps, serve-alongside ideas, storage guidance, and equipment for this recipe.
Cultural context
Baked oatmeal is an American home-style breakfast tradition that turns stovetop oatmeal into a cake-like casserole that can be baked once and portioned across a busy week. Its make-ahead, freezer-friendly nature has made it a popular part of the broader meal-prep breakfast movement in recent years.
Listahan note
This version lets the mixture rest briefly before baking, giving the oats a head start on absorbing the liquid so the finished casserole sets evenly rather than staying loose in the center.
Technique cues
- Mashing the bananas until mostly smooth, rather than leaving large chunks, helps them blend into the batter and sweeten it evenly throughout.
- Letting the assembled mixture sit for 5 minutes before baking gives the oats a chance to begin absorbing the liquid, which helps the casserole set more evenly.
- Baking until the center no longer jiggles when gently shaken is a more reliable doneness test than color alone, since the top can look done before the middle has fully set.
Kitchen flow
- Parallel prep
- Mash the bananas and whisk the wet ingredients while the oven preheats, so the dry oats can be stirred in right before baking.
- Make-ahead
- This dish is built for the week ahead; bake a full batch and portion it into squares for quick breakfasts.
- Leftover move
- Crumble a leftover square over yogurt with fresh fruit for a parfait-style breakfast.
- Cleanup rhythm
- Mix everything in one large bowl before pouring into the baking dish, avoiding extra mixing bowls.
Ingredient brief
Role, handling, and swap guidance for each key ingredient.
Old-fashioned rolled oats
Base
Purpose: They hold their shape and texture through baking, giving the dish a heartier bite than instant oats would.
Handling: Stir in after the wet ingredients are combined, distributing evenly through the batter.
Adaptation: Quick oats can work but produce a softer, less textured final casserole.
Ripe bananas
Sweetness and binding
Purpose: Mashed bananas add natural sweetness and moisture, reducing the need for a lot of added sugar.
Handling: Use fully ripe, spotted bananas for the most natural sweetness, mashed until mostly smooth.
Adaptation: Unsweetened applesauce can replace bananas for a different but similarly moist result.
Eggs and milk
Custard base
Purpose: Together they bind the oats into a cohesive, cake-like casserole rather than a loose porridge.
Handling: Whisk together thoroughly with the mashed banana and maple syrup before adding the dry ingredients.
Adaptation: A flax egg and plant-based milk can replace both for a dairy-free, egg-free version, though the texture will be slightly denser.
Maple syrup and cinnamon
Sweetener and spice
Purpose: They add warmth and sweetness that complement the banana without making the dish overly sugary.
Handling: Whisk the maple syrup in with the other wet ingredients and stir the cinnamon in with the dry oats.
Adaptation: Honey can replace maple syrup for a different but similarly warm sweetness.
Technique notes
- Let the mixture rest the full 5 minutes before baking so the oats have a chance to start absorbing liquid.
- Check doneness by gently shaking the dish; a jiggly center means it needs more time even if the top looks golden.
- Cool completely before cutting into squares, since a warm casserole is more likely to crumble than slice cleanly.
Ingredient swaps
- Dairy-free direction
- Use a plant-based milk in place of dairy milk for a version without dairy.
- Fruit addition direction
- Fold in blueberries or diced apple along with the mashed banana for extra flavor and texture.
- Nut addition
- Sprinkle chopped walnuts or pecans over the top before baking for added crunch.
Serve alongside
- Fresh berries
- A drizzle of extra maple syrup
- Yogurt
- Coffee
- Milk
- Orange juice
Serving suggestions only — check pairings for your household's allergens.
Storage & reheating
- Refrigerate in an airtight container for up to 5 days.
- Reheat individual squares for about 45 seconds in the microwave, or warm in a low oven for a crisper top.
- Freeze baked squares for up to 3 months; thaw in the fridge or reheat directly from frozen.
Equipment
- 9x9-inch baking dish
- Large mixing bowl
- Whisk
Make this household-aware
Listahan Pro checks this recipe against your household's allergens, finds pantry-aware swaps, builds the shopping list, and helps you plan the week around it.
Plan it in Listahan
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