Preheat the Oven:
Preheat your oven to 350°F (175°C) and line a cupcake tin with paper liners.
Mix Dry Ingredients:
In a bowl, whisk together the flour, baking powder, cinnamon, and salt.
Cream Butter and Sugar:
In a separate bowl, beat the butter and sugar until light and fluffy, about 3 minutes.
Add Eggs and Vanilla:
Beat in the eggs one at a time, then mix in the vanilla extract.
Combine Wet and Dry Ingredients:
Alternate adding the dry ingredients and brewed coffee into the butter mixture. Start and end with the dry ingredients.
Fill Cupcake Liners:
Spoon the batter into the cupcake liners, filling them about ¾ full.
Bake:
Bake for 18-20 minutes, or until a toothpick comes out clean. Cool on a wire rack.
Prepare Frosting:
Beat the softened butter with the powdered sugar, cinnamon, brewed coffee, and vanilla until smooth and creamy.
Frost the Cupcakes:
Once the cupcakes are cool, frost them generously with the cinnamon coffee frosting.
Serve and Enjoy:
Eat while pretending to be an expert in both coffee and baked goods.