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Homemade Nectarine-Peach Oatmeal Cookie Bars photo
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Nectarine-Peach Oatmeal Cookie Bars

These Nectarine-Peach Oatmeal Cookie Bars are chewy, fruity, and lightly spiced—perfect for breakfast or a delightful snack anytime!
Prep Time15 minutes
Cook Time35 minutes
Total Time50 minutes
Course: Breakfast, Dessert, Snack
Cuisine: American
Keyword: Baking, Easy, Fruit, Oatmeal, Vegetarian
Servings: 9 servings

Ingredients

  • 1 cup rolled oats
  • 1/2 cup all-purpose flour
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon ground cinnamon
  • 1/4 teaspoon salt
  • 1/2 cup brown sugar packed
  • 1/4 cup granulated sugar
  • 1/2 cup unsalted butter softened
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1 cup diced nectarines about 1 large nectarine
  • 1 cup diced peaches about 1 large peach
  • 1/2 cup chopped walnuts or pecans optional

Instructions

  • Preheat your oven to 350°F (175°C). Lightly grease or line an 8x8-inch baking pan with parchment paper for easy removal.
  • In a medium bowl, combine the rolled oats, all-purpose flour, baking soda, ground cinnamon, and salt. Whisk these together until evenly blended.
  • In a separate large bowl, use a hand mixer or stand mixer to cream the softened unsalted butter with the brown sugar and granulated sugar until light and fluffy, about 2-3 minutes.
  • Beat in the egg and vanilla extract until just combined, being careful not to overmix.
  • Gradually add the dry oat mixture to the wet ingredients, mixing on low speed until just incorporated. The batter will be thick and slightly crumbly.
  • Gently fold in the diced nectarines, peaches, and chopped nuts if using, taking care not to break up the fruit.
  • Spread the batter evenly into your prepared baking pan. Bake for 30-35 minutes or until the top is golden brown and a toothpick inserted into the center comes out mostly clean.
  • Allow the bars to cool completely in the pan on a wire rack before slicing into squares.

Equipment

  • 8x8-inch baking pan
  • Parchment Paper
  • Medium Bowl
  • Large Bowl
  • Hand Mixer or Stand Mixer
  • Wire Rack

Notes

  • Use ripe nectarines and peaches for the best natural sweetness and juiciness.
  • To prevent sticking, line the pan with parchment paper with an overhang for easy lifting.
  • Store leftover bars in an airtight container at room temperature up to 3 days, or freeze for up to 3 months.