Preheat and Prepare Pan:
Preheat the oven to 350°F (175°C).
Grease and line a 9-inch loaf pan.
Mix Dry Ingredients:
In a bowl, combine flour, baking powder, baking soda, salt, and instant coffee. Set aside.
Cream Butter, Cream Cheese, and Sugar:
In a separate bowl, beat together butter, cream cheese, and sugar until light and fluffy.
Add Eggs and Vanilla:
Add eggs, one at a time, beating well after each addition. Stir in vanilla extract.
Alternate Adding Dry Ingredients and Liquids:
Gradually add the dry ingredients, alternating with milk and coffee, until well incorporated.
Bake:
Pour batter into prepared pan and smooth the top.
Bake for 50-55 minutes or until a toothpick inserted comes out clean.
Make the Glaze:
In a small bowl, whisk together powdered sugar, coffee, and vanilla.
Cool and Glaze:
Let the cake cool in the pan for 10 minutes, then transfer to a wire rack.
Drizzle with glaze and let set.
Serve:
Slice, serve, and enjoy the coffee-powered indulgence.