Preheat oven to 375 degrees. In a medium microwave bowl, melt the butter until just melted, about 30 seconds. Stir in the Bisquick, sugar, and half & half.
By the Tablespoons, mound dough onto top of peaches and then gently spread, leaving some room for peaches to show through.
Bake for about 40 to 45 minutes. Let cool and serve with vanilla ice cream.