Fall Pumpkin Spice Crumble Cake with Sweet Streusel

Welcome to a cozy autumn favorite: Autumn Pumpkin Spice Crumble Cake. This delicious cake blends the warm, familiar spices of fall—cinnamon, nutmeg, and ginger—with smooth pumpkin puree and a buttery crumble topping for contrast. It’s simple to make, ideal for gatherings or a comforting afternoon treat, and fills the kitchen with the aromas of the season. Below you’ll find clear ingredients, step-by-step instructions, helpful tips, and serving ideas to ensure your cake turns out moist, spiced, and perfectly crumb-topped every time.

Ingredients

For the Crumble Topping:

• 1 cup all-purpose flour
• 1 cup packed light brown sugar
• 1 teaspoon ground cinnamon
• 1/2 teaspoon ground nutmeg
• 1/4 teaspoon salt
• 1/2 cup unsalted butter, cold and cubed

For the Pumpkin Spice Cake:

• 2 cups all-purpose flour
• 3 teaspoons baking powder
• 1 teaspoon salt
• 1 teaspoon ground cinnamon
• 1/2 teaspoon ground ginger
• 1/2 teaspoon ground nutmeg
• 1/4 teaspoon ground cloves
• 1 cup pumpkin puree (not pumpkin pie filling)
• 1/2 cup vegetable oil
• 2 cups granulated sugar
• 2 large eggs (room temperature)
• 1 teaspoon vanilla extract
• 1 cup buttermilk (or milk mixed with 1 teaspoon lemon juice or vinegar)

Vanilla Drizzle:

• 1 cup powdered sugar
• 2 tablespoons milk
• 1/2 teaspoon vanilla extract

Optional substitutions: If you’re dairy-free, substitute the buttermilk with plant-based milk plus lemon juice. For gluten-free, use a 1:1 gluten-free baking flour.

Instructions

Step 1: Prepare the Crumble Topping

Preheat the oven to 350°F (175°C). Grease a 9×9-inch or 9×13-inch baking pan. In a medium bowl, combine the flour, brown sugar, cinnamon, nutmeg, and salt. Add the cold, cubed butter and cut it into the dry ingredients with a pastry cutter or your fingertips until the mixture resembles coarse crumbs. Set aside in the refrigerator while you prepare the batter.

Step 2: Make the Pumpkin Spice Cake

Whisk together the flour, baking powder, salt, cinnamon, ginger, nutmeg, and cloves in a large bowl. In another bowl, blend the pumpkin puree, vegetable oil, and sugar until smooth. Add the eggs one at a time, beating well after each addition, and stir in the vanilla.

Gradually fold the dry ingredients into the pumpkin mixture, alternating with the buttermilk. Stir gently until just combined—overmixing can make the cake dense.

Step 3: Assemble and Bake

Pour the batter into the prepared pan and spread evenly. Sprinkle the crumble topping across the surface, pressing lightly so it adheres. Bake in the preheated oven: about 30–35 minutes for a 9×9 pan or 20–25 minutes for a 9×13 pan. The cake is done when a toothpick inserted near the center comes out with a few moist crumbs but no raw batter.

Step 4: Prepare the Vanilla Drizzle

While the cake cools for a few minutes, whisk together the powdered sugar, milk, and vanilla until smooth. Drizzle over the warm cake for a sweet finish.

Step 5: Serve

Slice and serve the Autumn Pumpkin Spice Crumble Cake warm or at room temperature. The contrast between the tender, spiced cake and the crisp, buttery crumble makes every bite satisfying.

• Use cold butter: For the crumble topping, cold cubed butter yields the best crumbly texture and crispness.
• Pumpkin puree vs. pie filling: Use plain pumpkin puree, not pumpkin pie filling, which contains added sugar and spices.
• Don’t overmix: Combine wet and dry ingredients until just incorporated to keep the cake light and tender.
• Adjust spices: Increase cinnamon or ginger for a bolder spice profile, or reduce them for a milder taste.
• Bake carefully: Check the cake a few minutes before the minimum time listed—ovens vary, and you want a moist center without underbaking.