Filling:2.5 lbs. fresh nectarines, peaches, plums, apricots or cherries, pitted and sliced1/2 tsp. almond extract1 tsp. nutmeg1/2 cup Grand Marnier (or use Brandy, Bourbon or Cointreau)1/2 cup light brown sugar, packed (might need to add more or less depending on sweetness of fruit)1/4 cup all-purpose flourTopping:3/4 cup all-purpose flour1/2 tsp. sea salt1/2 cup light brown sugar1 cup rolled oats6 Tbsp. cold butter, cut into tablespoonsMix all the filling ingredients together in a large bowl and set aside for about an hour. This gives time for the mix to develop a nice juicy syrup, so don't skimp on the time.For the filling: mix all the topping ingredients except for the butter. Cut the butter pieces into the topping mixture until the mix resembles large coarse crumbs.Preheat oven to 375 F.Lightly butter a 8" x 8" casserole dish. Pour in the filling and then top with topping. Spread evenly across the top.Bake uncovered until golden brown 45-55 minutes.