Preheat your oven to 375°F . Add the cubed butter into a 9x13 inch pan and place in the oven to melt while you make the rest of the recipe. This will take 5-10 minutes.
1/2 cup unsalted butter
Place the sliced peaches in a large mixing bowl and toss them with 1/4 cup of granulated sugar, the ground nutmeg, ground cinnamon, and cornstarch