Instructions: 1. Preparing the Pumpkin Cake: Preheat your oven to 350°F (175°C). Grease and flour a 9x9-inch baking dish or line it with parchment paper for easy removal.
2. Making the Streusel Topping: In a medium-sized bowl, combine the all-purpose flour, granulated sugar, brown sugar, cold unsalted butter pieces, ground cinnamon, and chopped nuts (if using).
3. Assembling and Baking: Once baked, remove the pumpkin coffee pie cake from the oven and let it cool in the baking dish for about 10 minutes.
4. Optional Glaze: In a small bowl, whisk together the powdered sugar, milk, and vanilla extract until smooth.Drizzle the glaze over the cooled pumpkin coffee pie cake.
Step 5: Cooling and Serving Slice the cake into squares and serve warm or at room temperature.
Step 6: Enjoy! Enjoy a slice of this delightful pumpkin coffee pie cake with a hot cup of coffee or tea for a cozy autumn treat!