Preheat the oven to 350 degrees F.
For the filling: Toss the peaches in a large bowl with the zest and lemon juice. Add the rest of the ingredients and stir to combine.4-5 fresh peaches, pitted and cut into chunks
1 lemon, zested and juiced
3 tablespoons all-purpose flour
1/4 cup tightly packed brown sugar
2 tablespoons sugar
1/2 teaspoon vanilla extract
Fresh blueberries to taste (1/2 cup or more)
Pinch kosher salt
For the topping: Mix flour, brown sugar, butter, cinnamon, and salt in a bowl using a pastry cutter or fork until evenly crumbled. Fold the rolled oats into flour mixture; sprinkle and press topping into peaches.1/2 cup all-purpose flour
1/2 cup brown sugar
1/2 cup cold butter
1 teaspoon ground cinnamon
1/4 teaspoon salt
1 cup rolled oats
Directions1.Arrange peach mixture evenly in an baking dish (I used a 12 inch oval).
2. Sprinkle and press topping into peaches.
3.Bake in the preheated oven until topping is lightly browned, about 30 minutes.