Baked Oatmeal

Introduction

Baked oatmeal is a sheet-pan breakfast that bakes into a cake-like texture in 40 minutes, then slices and serves hot or cold. Mix everything in one bowl, pour into a 9-inch pan, and you’re done with hands-on work—no stovetop stirring required. It’s a practical choice for feeding a group or portioning out breakfasts for the week.

Recipe Details

• Prep Time: 10 minutes
• Cook Time: 42 minutes
• Total Time: 52 minutes
• Servings: 6

Ingredients

• 3 cups (720 g) quick-cooking oats
• 1 cup (240 g) brown sugar
• 2 teaspoons baking powder
• 1 teaspoon ground cinnamon
• 1 teaspoon salt
• 1 cup (240 ml) milk
• ½ cup (120 g) butter (melted)
• 2 eggs

Instructions

1. Mix the ingredients and pour them into a 9-inch (20 cm) baking pan. They can also be carefully mixed in the pan.
2. Bake at 350 °F (175 °C) for 40-45 minutes.
3. Serve hot, cold, with or without milk.

Variations

Add dried fruit or nuts: Stir in ½ cup chopped dried apricots, raisins, or chopped walnuts before baking for added texture and natural sweetness without changing the bake time.

Swap the brown sugar for honey: Use ¾ cup honey in place of brown sugar for a deeper, more complex sweetness and a slightly denser crumb.

Use rolled oats instead: Old-fashioned rolled oats will bake into a chewier, less uniform texture compared to quick-cooking oats; add 2–3 minutes to the bake time.

Make it spiced: Add ½ teaspoon ground nutmeg and ¼ teaspoon ground ginger along with the cinnamon for warmth and complexity.

Use buttermilk: Replace regular milk with buttermilk for a slightly tangier flavor and more tender crumb.

Tips for Success

Don’t overbake. Check the oatmeal at 40 minutes—the center should be set but still slightly moist when you insert a toothpick. Overbaking dries it out noticeably.

Melt the butter beforehand. Melted butter mixes evenly and prevents pockets of grease; if you add cold butter, it won’t incorporate properly and you’ll end up with uneven baking.

Mix everything before the pan, not in it. Mixing in the pan saves a dish, but it’s easy to miss pockets of baking powder and cinnamon in the corners. A separate bowl ensures even distribution.

Let it cool slightly before slicing. Straight from the oven, baked oatmeal is too soft to cut cleanly. Wait 5 minutes, then slice into squares—it will hold its shape better and be easier to serve.

Serve with milk to stretch it further. A glass of milk poured over a slice turns it into more of a porridge; this works well if you’re feeding more people than you expected.

Storage and Reheating

Store covered in the fridge for up to 4 days. Wrap individual slices in foil or place in a sealed container to prevent drying.

FAQ

Can I double this recipe? Yes. Use a 9×13-inch pan and bake for 50–55 minutes, checking at 50 to ensure the center is set without overbaking.

Can I make this without eggs? Eggs bind and help create the cake-like crumb. Omitting them will result in a looser, more porridge-like texture. If you must avoid them, add 2 tablespoons of cornstarch to compensate, though the result will be different.

What’s the best way to serve this cold? Slice it, store it uncovered in the fridge overnight (this helps it firm up further), and serve with cold milk or yogurt poured over top. Cold baked oatmeal has a more bread-like texture and works well as a grab-and-go breakfast.