Granola Apple Crisp

Granola Apple Crisp
ingredients:
3 tablespoons of Butter,
1 1/2 cup of Nature Valley Granola Crumble,
2 tablespoons of flour,
1/4 cup of sugar,
1 - 2 Green Apples,
Mill Farms Cinnamon Sugar,
Jed's Maple Shakers,
Marshmallows (optional)