Baked Oatmeal Cups That Don't Dry Out in the Fridge — Finally
These baked oatmeal cups stay soft in the fridge for five days because the ratio does the work — enough liquid, enough fat, and one ten-minute rest before baking. One bowl, 25 minutes, and a week of breakfasts that reheat like they were just made.
Equipment
- 12-cup muffin tin
- Parchment muffin liners
- Large Mixing Bowl
- Whisk
- 1/4-cup scoop
- Wire Rack
Ingredients
Dry Ingredients
- 3 cups old-fashioned rolled oats
- 2 teaspoons baking powder
- 1 teaspoon ground cinnamon
- 1/2 teaspoon fine salt
Wet Ingredients
- 2 cups whole or oat milk (unsweetened if using oat)
- 2 large eggs
- 1/3 cup maple syrup
- 1/4 cup coconut oil, melted and slightly cooled
- 1 teaspoon vanilla extract
- 1 ripe banana, mashed (or 1/2 cup applesauce)
Mix-Ins
- 1 1/2 cups mix-ins like blueberries, chocolate chips, pecans, or shredded coconut
Instructions
- Preheat the oven to 375°F. Line a 12-cup muffin tin with parchment liners, or grease the tin well with butter or coconut oil.
- In a large bowl, stir the oats, baking powder, cinnamon, and salt until evenly distributed. Thump the baking powder on the rim of the bowl first to break up any lumps.
- In a separate bowl or large measuring cup, whisk the milk, eggs, maple syrup, melted coconut oil, vanilla, and mashed banana until the banana is mostly integrated. A few tiny lumps are fine.
- Pour the wet ingredients into the dry ingredients and stir until no dry patches remain. Stop there. Overmixing leads to gummy cups.
- Fold in your mix-ins with four or five gentle strokes. If using frozen berries, be extra gentle so they don't bleed into the batter.
- Rest the batter for 10 minutes. This is not optional — the oats need time to absorb the liquid. When you come back, the batter should be thick and slightly glossy.
- Scoop 1/4 cup of batter into each liner, filling to the top. Smooth the tops with the back of the scoop so they bake round instead of looking like craters.
- Bake for 25 minutes, until the tops are golden and a toothpick inserted in the center comes out with just a few moist crumbs. If your oven runs hot, start checking at 22 minutes.
- Let the cups rest in the tin for 5 minutes, then transfer them to a wire rack to cool completely.
Notes
Do not skip the 10-minute rest — it is the difference between tender cups and dense ones. Store baked oatmeal cups in an airtight container in the fridge for up to 5 days, with a paper towel in the bottom to catch condensation. Freeze for up to 3 months; reheat fridge-cold cups for 20-30 seconds in the microwave, or 60-90 seconds from frozen. For gluten-free, use certified GF old-fashioned oats. For dairy-free, use unsweetened oat or almond milk and keep the coconut oil. If using quick oats, reduce the milk to 1 1/2 cups and check at 20 minutes.