Preheat the oven to 350ºF. Spray an 8x8" baking pan with cooking spray.
Place the peeled and sliced peaches in a medium-size bowl. Sprinkle the sugar, flour, salt and cinnamon over the peaches and mix. 4 cups freshly sliced peaches, 1/2 cup granulated sugar, 2 tablespoons all-purpose flour, 1/4 teaspoon salt, 1 teaspoon ground cinnamon
Pour the peach filling into the prepared pan.
Using the same bowl that you mixed the peaches in, combine the oats, brown sugar, flour, soda and baking powder. Using a pastry blender, cut in the cold butter until the mixture is crumbly. 1/2 cup old-fashioned oats, 1/2 cup brown sugar, 1/2 cup all-purpose flour, 1/4 teaspoon baking soda, 1/4 teaspoon baking powder, 1/4 cup cold salted butter
Sprinkle the oat streusel on top of the peach mixture. Pat the streusel topping down firmly with clean hands before baking. This helps it form crunchy clusters.
Bake until deep golden brown and peach juices are bubbling at the edges, about 35 minutes.
Video
Notes
4 cups fresh peeled sliced peaches (about 4-5 medium). For frozen: thaw and drain completely. For canned: drain and pat dry.
Use old-fashioned rolled oats for best crunch. Quick oats will give a softer topping.
Butter must be cold. Cut into small cubes straight from the fridge.
Refer to the article above for more tips and tricks.The calories shown are based on the crisp serving 9, with 1 serving being 1/9 of the crisp. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information. **