Golden baked oatmeal squares with mixed berries in a 9x13 pan

Baked Oatmeal with Mixed Berries

Name: Baked Oatmeal with Mixed Berries
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Yield: 8 servings
Cuisine: American
Ingredients: 4 cups quick oats; 0.75 cup brown sugar; 2 tsp baking powder; 1.5 tsp cinnamon; 0.5 tsp kosher salt; 3 cups whole milk; 2 large eggs; 0.25 cup melted butter; 3 cups mixed berries; 1 cup maple syrup; 2 cups Greek yogurt

Make-ahead baked oatmeal squares with berries for staggered eaters.

Prep: 15 min
Cook: 45 min
Serves 8
Difficulty: easy

A 9x13 baked oatmeal that feeds the hall from one pan — quick oats baked with milk, eggs, and cinnamon, studded with mixed berries. Bake the night before or early shift; reheat portions in the microwave between calls.

575Cal

18gProtein

95gCarbs

16gFat

Ingredients

4 cups quick oats
0.75 cup brown sugar
2 tsp baking powder
1.5 tsp cinnamon
0.5 tsp kosher salt
3 cups whole milk
2 large eggs
0.25 cup melted butter
3 cups mixed berries
1 cup maple syrup
2 cups Greek yogurt

Instructions

Heat oven and prep the dish: Heat oven to 350°F. Spray a 9x13 baking dish with oil. For 10 or 14 firefighters, use two dishes and split the batter evenly rather than one overflowing pan.
Mix dry and wet: Whisk oats, brown sugar, baking powder, cinnamon, and salt in a large bowl. In another bowl, whisk milk, eggs, and melted butter until smooth. Pour wet into dry and stir until no dry pockets remain.
Fold in berries and bake: Gently fold in berries. Spread level in the dish. Bake 40–45 minutes until the center is set, edges are golden, and a knife in the center comes out clean. Cool 10 minutes before cutting — hot oatmeal squares fall apart if rushed.
Portion and hold: Cut into squares — one generous square per firefighter at base 8. Hold covered at room temp up to 2 hours or refrigerate overnight. Reheat squares 1–2 minutes in the microwave until warm through; pass maple syrup and yogurt at the line.

Station workflow

Bake before the crew arrives so breakfast is grab-and-go between apparatus checks.
Label the pan with bake time — overnight oats cement to the dish if you skip soaking later.
Set out a sheet pan of warm squares and let firefighters top their own — faster than plating every bowl.

Cleanup

Soak the baking dish in warm water immediately after cutting — baked oatmeal glue is easier hot.
Wipe berry stains on counters before they set; sugar syrup gets tacky fast.

Leftovers

Squares keep 4 days refrigerated; reheat covered with a splash of milk to restore moisture.
Crumble cold leftovers into a parfait with yogurt and granola for a fast second breakfast.