Baked Oatmeal Cake
A tender, moist cake that tastes like warm cinnamon-oatmeal comfort. Baked in one bowl and ready in 35 minutes, perfect for breakfast or a simple dessert.
- Total time
- 40 min
- Servings
- 8
- Calories
- 310
- Protein
- 6g
Ingredients
- 2 cups rolled oats (old-fashioned)
- 1.5 cups all-purpose flour
- ¾ cup brown sugar, packed
- ½ cup butter, melted
- 2 whole eggs
- 1.5 teaspoon ground cinnamon
- 1 teaspoon baking powder
- ¼ teaspoon salt
Instructions
- 1
Set the oven to 350°F and wait until the indicator light or beep tells you it has finished heating, about 10 minutes.
- 2
Grease a 9-inch square baking pan by brushing melted butter or oil all over the inside surface, including the bottom and all four sides.
- 3
Pour the 2 cups of rolled oats, 1.5 cups of flour, 0.75 cup of brown sugar, 1.5 teaspoons of cinnamon, 1 teaspoon of baking powder, and 0.25 teaspoon of salt into a large mixing bowl.
- 4
Stir the dry ingredients with a wooden spoon or whisk until the brown sugar is evenly mixed throughout and there are no lumps of cinnamon or baking powder visible, about 1 minute.
- 5
Pour the 0.5 cup of melted butter and the 2 eggs into the bowl with the dry ingredients.
- 6
Stir everything together with a wooden spoon until no streaks of flour or dry oats remain and the batter looks uniform and slightly wet, about 1 minute—do not overmix.
- 7
Pour the batter into the prepared pan and use the back of a spoon or an offset spatula to spread it into an even, flat layer, reaching all four corners.
- 8
Place the pan in the preheated 350°F oven on the middle rack and bake for 25–30 minutes until a toothpick inserted into the center comes out with just a few moist crumbs clinging to it.
- 9
Remove the pan from the oven and set it on a counter or cooling rack for 10 minutes so the cake firms up enough to cut without crumbling.
- 10
Cut the cake into 8 equal squares (cut 2 vertical lines and 3 horizontal lines to make a grid) and serve warm or at room temperature.
Tools you’ll need
- 9-inch square baking pan
- large mixing bowl
- wooden spoon or whisk
- spatula or spoon for spreading
- toothpick
- oven
- cooling rack or countertop
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