Baked Apples. 3 fuji apples, peeled and thinly sliced 2 1/2 tsp cinnamon 1 tsp cornstarch juice of half a lemon 3 tablespoons brown sugar 2 tablespoons butter Preheat oven to 420 degrees. Mix all of the ingredients (except for the last) together in a bowl until apples are evenly coated. Cube the butter and scatter on top of the apples. Bake for 25-30 minutes.