From Betty Crocker here

Ingredients:

• 1/3 cup sugar
• 1 T cornstarch
• 1/4 t ground cinnamon 
• 6 peaches, peeled, cut into 1/2-inch slices (6 cups)
• 2 T water
• 2 t lemon juice
• 1 cup Original Bisquick™ mix
• 2 T sugar
• 1/3 cup milk
• 1 T butter melted
• whipped cream, if desired

Instructions:

1.  Heat oven to 400°F. In 4-quart saucepan, mix 1/3 cup sugar, the cornstarch and cinnamon. Stir in peaches, water and lemon juice. Heat to boiling, stirring constantly; boil and stir 1 minute. Pour into ungreased 8- or 9-inch square (2-quart) glass baking dish.
2. In medium bowl, stir Bisquick mix, 1 tablespoon of the sugar, the milk and melted butter until soft dough forms.
3. Drop dough by 6 tablespoonfuls onto hot peach mixture. Sprinkle remaining 1 tablespoon sugar over dough.
4. Bake 20 to 25 minutes or until golden brown. Serve with whipped cream.

If you don’t have bisquick:

Substitute

• 1 C flour
• 1 T butter
• 1.5 t baking powder
• 0.25 t salt