• Gather the ingredients so you have everything close at hand on the counter or table. Preheat oven to 400℉.
• Using a pairing knife, peel, core, and slice your peaches. Place in a large bowl.

Prepare the Peaches

• In a medium saucepan, combine brown sugar, cornstarch, and freshly ground nutmeg. Add water to mixture and cook till sauce thickens.
• Add lemon juice and butter to the sauce, then pour over the peaches. Stir to combine.

Make the Topping

• To prepare your topping, in a medium bowl, sift together the all-purpose flour, granulated sugar, baking powder, and salt.
• Cut in butter until mixture is crumbly. Create a hole in the center and add the large egg and whole milk. Whisk together with a fork and then blend in with the flour mixture until moist.
• Pour hot fruit mixture into a greased square baking dish. Spoon biscuit topping over peaches by small mounds, flattening them out with the spoon or your fingers.
• Sprinkle with coarse decorating sugar to garnish. Bake in preheated oven for 35-45 minutes until topping is cooked through. Be sure to check the topping with a fork to test if it is fully baked. Serve warm with ice cream or whipped topping. Serves 4-6.