Peel banana. Cut ¼ the banana and set aside for later. Microwave the remaining ¾ banana for 20 to 30 seconds to bring out the sweetness. Mash microwaved banana in a bowl and mix in the yogurt and vanilla extract. Cover and chill in refrigerator.

Once yogurt-banana mixture is chilled, slice the ¼ banana into thin slices. Layer the bottom and sides of a small ramekin with banana slices to form a banana “crust.” Pour banana-yogurt filling on top to fill the ramekin. Garnish with graham cracker crumbles and whipped cream. Serve immediately.