Preheat oven to 375° F. Spray bottom and sides of a 9x9 pan with non-stick cooking spray. Place peaches on bottom of pan. Sprinkle with lemon juice.
Combine all dry ingredients in a bowl. Add the egg and mix until crumbly.
Sprinkle mixture over peaches. Drizzle the melted butter over the mixture.
Bake in the oven for 35-40 minutes or until the top is golden brown.
Top with ice cream or whipping cream for some extra deliciousness!