- Preheat oven to 350F. 
- Line 1 muffin tin with paper liners 
- In a stand mixer on medium speed, combine butter and sugar and beat until smooth 
- Add eggs and vanilla and beat till smooth, scraping sides as necessary 
- In a separate bowl, whisk together flour, baking powder, cinnamon, and salt. 
- With the mixer on low, alternate adding 1/3 of the flour mixture with 1/3 of the milk at a time into the butter mixture and mix just until incorporated. 
- Fold in 1/2 cup bittersweet chocolate chips 
- Spoon batter into cupcake liners until 3/4 full 
- Bake 12-15 minutes, until cupcakes are golden and do not indent to the touch 
- Remove from oven to cool fully 
- Crush Grahams and set aside