Place stick of softened butter into a medium sized mixing bowl. Pour dry ingredients (flour, sugar and cinnamon) on top of the butter. Use a fork to press dry ingredients into the butter until a uniform crumble forms. Set bowl aside.
Peel and slice apples placing them into pie plate until they have filled the dish and form a softly rounded mound.
Sprinkle crumble topping over apples, covering evenly. Do not press in.
Bake for 45 minutes and check. Remove when fruit is bubbly and topping is golden brown.
Let cool until warm. Serve with a scoop of vanilla ice cream or enjoy as is. Serves 6.