First, cut the apples into cubes that are about the size of a tablespoon. Put all the cubes into a bowl. Melt the butter in the microwave and mix in the cinnamon, salt, lemon juice, and vanilla. Pour this over the apples and mix well with a spatula. Put the apples onto a cookie sheet.
3 apples, 1 tablespoon butter, 2 teaspoons cinnamon, 1 pinch salt, 1/2 teaspoon lemon juice, 1/2 teaspoon vanilla