Blueberry-Peach Crumble Recipe

Ingredients

• 4 to 6 peaches
• 1 box blueberries, fresh or frozen
• 1 lemon
• 1 teaspoon cinnamon
• 1/3 to 1/2 cup butter
• 1 cup brown sugar, divided
• 1/2 flour
• 1/2 rolled oats (if you don?t have rolled oats, replace with 1/2 cup flour)