Nectarine Honey Baked Oatmeal Squares

Name: Nectarine Honey Baked Oatmeal Squares
Prep time: 15 min
Cook time: 35 min
Total time: 50 min
Yield: 9 servings
Cuisine: American
Ingredients: 2 cups (180 g) rolled oats (old-fashioned); 3 medium fresh nectarines, ripe but firm, pitted and cut into ½-inch (1.3 cm) chunks; ½ cup (170 g) honey; 6 tablespoons (85 g) unsalted butter, softened to room temperature; 2 whole large eggs, at room temperature; 1 teaspoon (5 ml) vanilla extract; ½ teaspoon (3 g) fine sea salt; 1½ teaspoons (7 g) baking powder; ¾ teaspoon (1.8 g) ground cinnamon; ¾ cup (180 ml) whole milk

From the MyKitchenBank Kitchen

Tender baked oatmeal studded with fresh nectarines and sweetened with honey, baked into portable squares. The ripe fruit becomes jammy as it softens, creating pockets of flavor throughout the oats. These squares are naturally sweetened, hearty enough for breakfast, and perfect for meal prep.

Prep: 15 min
Cook: 35 min
Wait: 15 min
Total: 1 hr 5 min
Makes: 9 squares (3×3-inch/8×8 cm each)

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Steps

Before you start

Preheat oven to 350°F (175°C)
Use nectarines that are ripe but still firm enough to cut into chunks without falling apart
Line the baking pan with parchment paper for easy removal
Bring eggs and butter to room temperature for 30 minutes if your kitchen is cool

1
Prepare the pan
- Line a 9×9-inch (23×23 cm) square baking pan with parchment paper, letting the edges overhang slightly.
- This makes it easy to lift the baked oatmeal out for clean cutting.
- Set aside.
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Tip: Overhang parchment paper gives you handles to remove the whole sheet from the pan.
2
Mix dry ingredients
- In a medium bowl, whisk together the rolled oats, baking powder, cinnamon, and salt.
- Set aside.
- These ingredients distribute the leavening evenly through the batter.
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Tip: Whisking the dry ingredients prevents pockets of baking powder that could taste metallic.
3
Cream butter and honey
- In a large mixing bowl, beat together the softened butter and honey with a whisk or fork for about 1 minute until well combined and slightly pale.
- The mixture should look creamy and well integrated.
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Ready when: Mixture is creamy and no streaks of butter or honey remain
Tip: Room-temperature butter mixes in smoothly; cold butter will be lumpy and hard to combine.
4
Add eggs and vanilla
- Break the eggs into the butter mixture and whisk vigorously for about 1 minute until the eggs are fully incorporated and the mixture lightens slightly.
- Add the vanilla extract and whisk to combine.
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Ready when: No visible egg white streaks remain; mixture looks smooth and slightly thick
Tip: Room-temperature eggs blend in evenly; cold eggs can cause the mixture to curdle.
5
Combine wet and dry
- Pour the dry ingredients into the wet ingredients and fold gently with a spatula until just combined—about 6–8 folds.
- Add the milk and fold a few more times until the batter is thick but pourable with a slightly grainy texture from the oats.
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Ready when: No streaks of dry ingredients remain; batter is uniform but still thick
Tip: Overmixing develops gluten and makes the squares tough; stop as soon as everything is combined.
6
Fold in nectarines
- Gently fold the nectarine chunks into the batter in two additions, being careful not to crush the fruit.
- The batter should have an even distribution of fruit throughout.
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Ready when: Fruit is distributed evenly without being mushed into small pieces
Tip: Add fruit last and fold gently to keep chunks intact; they'll soften more in the oven.
7
Spread and bakeOven 350°F / 175°C
- Pour the batter into the prepared pan and spread it into an even layer using a spatula or the back of a spoon.
- Bake in a preheated 350°F (175°C) oven for 32–35 minutes.
- The edges should be set and lightly golden, and a toothpick inserted in the center should come out with just a few moist crumbs.
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Ready when: Edges are set and light golden; toothpick inserted in center comes out with a few moist crumbs, not batter
Tip: Don't overbake or the squares will be dry. The center will set as it cools.
8
Cool and cut
- Remove the pan from the oven and place it on a wire rack or countertop.
- Let the baked oatmeal cool for at least 15 minutes—this allows it to set enough to cut cleanly.
- Using the parchment overhang, lift the entire sheet onto a cutting board.
- Cut into 9 equal squares using a sharp knife, wiping the blade between cuts for clean edges.
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Ready when: Oatmeal is firm enough to cut into squares without crumbling
Tip: Cooling is essential; cutting too soon will cause the squares to fall apart. A warm knife helps make clean cuts.
9
Serve
- Serve the squares warm or at room temperature.
- They can be eaten as is or with a dollop of Greek yogurt, a drizzle of honey, or a splash of milk.

Good to know

Tips

Choose nectarines that are fragrant and yield slightly to pressure but are not mushy; underripe fruit won't add enough flavor or juice.
For deeper cinnamon notes, sprinkle the tops with a light coating of cinnamon sugar before baking—mix 1 tablespoon sugar with ¼ teaspoon cinnamon and dust the batter.
If your pan is very dark or non-stick, reduce the oven temperature to 325°F (160°C) to prevent over-browning on the bottom.
These squares are best eaten within 2 days at room temperature; after that, they dry out slightly but can be revived by reheating with a splash of milk.

Make ahead

You can prepare the batter up to 8 hours in advance; cover it and refrigerate in the baking pan. Bake directly from the fridge, adding 2–3 minutes to the baking time.

Storage & reheating

Store cooled squares in an airtight container at room temperature for up to 3 days, in the refrigerator for up to 5 days, or in the freezer for up to 2 months. Reheat individual squares in the microwave for 30–45 seconds or in a 325°F (160°C) oven for 8–10 minutes.

Substitutions

fresh nectarines, ripe but firm → peaches or plums. Use the same weight; peaches have similar texture and sweetness. Plums are slightly tarter, so you may want to add an extra tablespoon of honey.
honey → maple syrup or agave nectar. Use the same volume; both are slightly thinner than honey, so the texture may be slightly softer.
whole milk → almond milk, oat milk, or Greek yogurt thinned with water. Use the same volume; Greek yogurt will make the squares slightly denser and tangier.
rolled oats (old-fashioned) → steel-cut oats (use ½ cup less liquid). Steel-cut oats are chewier and take longer to soften; reduce milk to ¼ cup.