PEACH FILLING – 2/3 cup packed brown sugar – 2 Tbsp cornstarch, if you like a really thick, pie filling consistency, use 4 Tbsp – 2/3 cup water – 10 medium peaches, peeled and sliced – lemon juice BISCUITS – 1 cup all-purpose flour – 1 Tbsp brown sugar – 1 1/2 tsp baking powder – 1/8 tsp a pinch baking soda – 1/4 tsp salt – 1/4 cup butter, cut in small chunk – 1/3 cup milk – 1 Tbsp butter, melted, for brushing SUGAR WALNUT SWIRL – 1/2 cup finely chopped walnut – 3 heaped Tbsp brown sugar – 1/2 tsp cinnamon GLAZE – 1 1/3 cups powdered sugar – milk (or half and half, or cream) to thin the glaze – 1/4 tsp almond or vanilla extract, optional