Preheat oven to 350°F and melt butter in a deep round casserole dish while the oven is heating up.
In a bowl, sift together flour and baking powder; combine with 1 cup of the sugar and milk. Stir until the ingredients are incorporated, and set batter aside.
In a small saucepan, combine remaining ½ cup of sugar, peaches, strawberries, blueberries, and lemon juice; simmer on stove for 7-10 minutes.
Pour batter over the melted butter in the warm casserole dish, and then pour the fruit mixture over the batter (but do not stir!!).
Bake for 40 minutes at 350°F or until golden brown.
Serve warm with vanilla ice cream.
Recipe by DomestikatedLife at https://domestikatedlife.com/2020/06/05/strawberry-peach-cobbler/