1. 1. Preheat the oven to 350°F (175°C) and line a cupcake tin with liners.

2. 2. Cook the bacon until crispy, then chop it into small pieces.

3. 3. In a mixing bowl, combine all-purpose flour, whole wheat flour, and baking powder.

4. 4. In a separate bowl, whisk together eggs, melted butter, whole milk, vanilla extract, and brewed coffee.

5. 5. Gradually mix the wet ingredients into the dry ingredients until well combined.

6. 6. Fold in the chopped bacon into the batter.

7. 7. Pour the batter into the cupcake liners, filling each about 3/4 full.

8. 8. Bake for 18-20 minutes or until a toothpick inserted comes out clean.

9. 9. Let the cupcakes cool before frosting them.