Creating Pistachio Latte Coffee Cake is simple if you follow these easy steps:

1. Preheat your oven to 350°F (175°C). Grease and flour a 9-inch round cake pan.
2. Mix Dry Ingredients: In a bowl, combine flour, baking powder, and salt. Set aside.
3. Cream Butter and Sugar: In a mixing bowl, beat the softened butter and granulated sugar until light and fluffy.
4. Add Eggs: Incorporate the eggs one at a time, mixing well after each addition.
5. Blend in Milk: Gradually add the milk and vanilla extract to the mixture, blending until smooth.
6. Combine Dry Ingredients: Slowly mix the flour mixture into the wet ingredients until just combined. Do not overmix.
7. Prepare Coffee Mixture: In a small bowl, dissolve the instant coffee granules in a couple of tablespoons of hot water. Add to the cake batter and mix until combined.
8. Add Pistachios: Gently fold in the finely chopped pistachios, ensuring an even distribution throughout the batter.
9. Transfer to Pan: Pour the batter into the prepared cake pan, smoothing the top with a spatula.
10. Bake: Place in the oven and bake for 30-35 minutes or until a toothpick inserted in the center comes out clean.
11. Cool the Cake: Allow the cake to cool in the pan for 15 minutes before transferring it to a wire rack to cool completely.
12. Prepare Frosting (Optional): If desired, whisk powdered sugar with milk until it reaches your desired consistency for drizzling over the cooled cake.
13. Frost the Cake: Drizzle the prepared frosting over the cooled cake once it has completely cooled.

By following these simple steps, you’ll have a stunning Pistachio Latte Coffee Cake ready to enjoy!