Slice peeled apricots around the pits. Slice nectarines around the pits. Place sliced fruit in a bowl.
Add rinsed blueberries.
1/2 cup sugar
1/4 cup brown sugar
1 tsp lemon zest.
Add 2-4 tablespoons of flour to the filling depending on how much liquid is being released by the fruit. If your filling seems super juicy add more flour. The flour will help you filling thicken so you don't end up with pie soup.
Brown butter. Over medium heat, place 2 Tbs of butter in a saute pan. Saute butter until it becomes a rich brown color. Add 1 tsp of Amaretto and remove from heat.