Baked Oatmeal

A sliceable, custardy baked oatmeal with berries and cinnamon that you can prep the night before and reheat all week.

Servings
6
Prep
10 min
Cook
40 min
Total
50 min
Oven
375°F190°C
A baking dish of baked oatmeal studded with blueberries

Ingredients

Servings
Units

Equipment

  • 8×8-inch baking dish20×20 cm baking dish

Instructions

  1. Heat the oven to 375°F with a rack in the middle and butter the baking dish.Heat the oven to 190°C with a rack in the middle and butter the baking dish.

  2. Mix the oats, baking powder, cinnamon and salt in a bowl.

  3. In a second bowl, whisk the milk, egg, maple syrup, melted butter and vanilla until smooth.

  4. Scatter half the berries over the bottom of the dish, spread the oat mixture over them, then pour the milk mixture evenly over the top. Scatter the rest of the berries on top.

  5. Bake until the top is golden and the center is set and no longer wobbles, 38–42 minutes. Let it rest for 10 minutes before cutting into squares.

Notes

  • To prep ahead, assemble the dish, cover and refrigerate overnight; bake straight from the fridge, adding about 5 minutes.
  • Leftovers keep, covered, in the fridge for up to 5 days. Reheat squares in the microwave with a splash of milk.

My notes

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Nutrition estimate

Calories
265
Protein
8 g
Carbs
42 g
Fat
8 g

Per serving, estimated from USDA FoodData Central values for the listed amounts. Optional ingredients and to-taste seasoning are not included, and actual values vary by brand. How we estimate

An original recipe written for CookSimple. Illustration: original artwork for CookSimple. Added September 25, 2026.