Marbled Chocolate Banana Muffins

1. Preheat oven to 350 degrees F. Add cupcake liners to a muffin tin or spray well with cooking spray.

2. Melt chocolate over medium-low heat. Set aside to cool.

3. Prepare the streusel. Using your fingers or a pastry blender, mix together butter, sugar and graham cracker crumbs until crumbly. Set aside.

4. Stir together flour, baking soda and salt in a medium bowl. Set aside.

5. In a large mixer bowl, cream together the butter and sugar until light. Add in the egg.

6. Combine bananas, buttermilk and vanilla in a small bowl. Add half of the banana mixture to the creamed mixture and mix, then add half of the flour mixture and mix. Repeat with remaining banana and flour mixtures until everything is combined; try not to over-mix.

7. Pour half of the batter into the now-empty flour bowl. This will be your regular banana bread.

8. Add the melted chocolate and cocoa to the remaining batter in your mixer bowl and mix until combined.

9. Using a spoon or small ice cream scoop, alternately add heaping spoonfuls of each batter on top of one another, swirling lightly afterward, until the muffin cup is about 3/4 full. Sprinkle with streusel.

10. Bake 20-25 minutes or until a toothpick inserted in the middle comes out clean (extra large muffins take closer to 35 minutes). Keep in the pan for 10 minutes and then remove muffins to cool on a wire rack.