Preheat oven to 350°F. Spray a 10-inch springform pan or 9x9-inch baking dish with baking spray. Set aside.
To Make the Cake: In a medium bowl use a whisk to sift together flour, pumpkin pie spice, baking powder, baking soda and salt.
In a separate large bowl use an electric mixer to cream together butter, granulated sugar, brown sugar and vanilla. Beat on medium speed until fully combined. Beat in the eggs one at a time stopping to scrape the sides of the bowl as needed.
Add the pumpkin puree, beating until incorporated. Lower the speed of the mixer and gradually add the dry ingredients. Beat just until incorporated.Spread batter into prepared pan.
Streusel Topping: In a small bowl mix together flour, brown sugar and pumpkin pie spice. Use a pastry blender to cut the butter into the streusel until it resembles cornmeal. Add the pecans and toffee bits.
Sprinkle evenly over top of cake. Bake for 35-40 minutes or until a toothpick inserted into the center comes back clean. Let the cake cool in the pan on a wire rack.
Cut into desired size pieces and serve. Store in an airtight container at room temperature 3days or chilled in the refrigerator for up to 4-5 days.
Optional Glaze: 1/2 cup powdered sugar mixed with 1-2 Tbsp heavy cream and a dash of vanilla extract. Stir until smooth then drizzle over the cooled coffee cake.
Notes
PumpkinSpice Alternatives - You can use pumpkin pie spice or ground cinnamon in this recipe. Pumpkin pie spice is a blend of cinnamon, nutmeg, cloves, allspice and ginger so it expands the flavor profile. It's not a typo, you need 3 teaspoons pumpkin pie spice for the cake batter. When switching things up with ground cinnamon, add 2 teaspoon cinnamon and adjust from that point so as not to overwhelm the flavor.
Pumpkin - This recipe uses canned pumpkin and not pumpkin pie filling. This can be found year-round on the baking aisle of most grocery stores and big box stores like Walmart and Target.
Nuts - In this recipe, it’s not necessary to toast the pecans prior to baking as they will toast beautifully while the cake bakes. You could use walnuts in place of pecans.
Enjoy this Cake Your Way - You can eat this coffee cake while warm, at room temperature or chilled.
Vanilla Glaze - The glaze is completely optional for this coffee cake since the streusel topping is quite delicious all on its own. I like to include it, so you can adapt it to your taste.