Place apple slices in 2 quart baking dish. Sprinkle with lemon juice.

Combine flour, oats, sugar, cinnamon, & nutmeg. Cut butter into 1/2 inch chunks. Blend into dry ingredients using a pastry blender, two forks, or your hands. When crumbly, sprinkle over apples. Bake at 350°F for about 50-60min.

Top with ice cream or whipped cream to serve.