Get ready to fall in love with this Autumn Pumpkin Spice Crumble Cake! With its soft pumpkin cake base, spiced to perfection, and topped with a buttery, cinnamon crumble, this cake is everything you crave in a fall dessert. And let’s not forget the sweet vanilla drizzle that ties it all together! Whether you’re serving this at a cozy autumn gathering or enjoying it with a warm cup of coffee, it’s sure to be a seasonal favorite.

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Why You’ll Love This Pumpkin Spice Crumble Cake

Fall Flavor Explosion: Pumpkin puree, warm spices, and that buttery crumble—this cake captures all the best flavors of autumn in every bite.
Easy to Make: No complicated steps here! With simple ingredients and straightforward instructions, this cake comes together in no time.
Perfect for Sharing: Whether you’re making it for a weekend treat or bringing it to a gathering, this cake is sure to impress.

Ingredients You’ll Need

For the Crumble Topping:

1 cup all-purpose flour – The base for that irresistible crumble.
1 cup packed light brown sugar – Adds a rich, caramel-like sweetness.
1 tsp ground cinnamon – Because fall isn’t fall without cinnamon!
½ tsp ground nutmeg – For extra warmth and spice.
¼ tsp salt – Balances out the sweetness.
½ cup unsalted butter, cold and cubed – Makes the topping wonderfully crumbly and buttery.

For the Pumpkin Spice Cake:

2 cups all-purpose flour – The foundation for your tender cake.
3 tsp baking powder – Helps the cake rise beautifully.
1 tsp salt – Enhances all the other flavors.
1 tsp ground cinnamon – Adds that signature fall spice.
½ tsp ground ginger – Brings a touch of zing.
¼ tsp ground nutmeg – A must-have in any pumpkin recipe.
¼ tsp ground cloves – Adds depth and warmth to the spice mix.
1¼ cups pumpkin puree (not pumpkin pie filling) – The star of the show!
½ cup vegetable oil – Keeps the cake moist and soft.
2 cups granulated sugar – For sweetness and structure.
2 large eggs, room temperature – Provides richness and binds everything together.
1 tsp vanilla extract – Enhances the flavors.
1 cup buttermilk (or milk with 1 tsp lemon juice/vinegar) – Adds moisture and tanginess to balance the sweetness.

For the Vanilla Drizzle:

1 cup powdered sugar – For that sweet finishing touch.
2 tbsp milk – Makes the drizzle nice and smooth.
¼ tsp vanilla extract – Adds extra flavor to the drizzle.

Step-by-Step Instructions

1. Prepare the Crumble Topping

Preheat your oven to 350°F (175°C) and grease a 9×9-inch or 9×13-inch baking pan. A smaller pan will give you a thicker cake, while a larger pan will make it more spread out.
In a medium bowl, whisk together 1 cup flour, 1 cup packed light brown sugar, 1 tsp ground cinnamon, ½ tsp ground nutmeg, and ¼ tsp salt.
Using a pastry cutter or your hands, cut the cold butter into the dry ingredients until it resembles coarse crumbs. Set aside.

2. Make the Pumpkin Spice Cake

In a large bowl, whisk together 2 cups flour, 3 tsp baking powder, 1 tsp salt, 1 tsp ground cinnamon, ½ tsp ground ginger, ¼ tsp ground nutmeg, and ¼ tsp ground cloves.
In a separate bowl, mix the 1¼ cups pumpkin puree, ½ cup vegetable oil, and 2 cups granulated sugar until smooth and well combined.
Add the 2 eggs one at a time, beating well after each addition. Stir in 1 tsp vanilla extract.
Gradually add the dry ingredients to the pumpkin mixture, alternating with the 1 cup buttermilk, and stir until just combined. Be careful not to overmix, or your cake may become dense.

3. Assemble & Bake

Pour the cake batter into the prepared baking pan, spreading it evenly.
Sprinkle the crumble topping over the cake batter and gently press it into the surface with your hands or a spatula.
Bake for 30-35 minutes for a 9×9 pan (or 20-25 minutes for a 9×13 pan), or until a toothpick inserted into the center comes out with just a few moist crumbs.
Let the cake cool slightly in the pan while you prepare the vanilla drizzle.

4. Prepare the Vanilla Drizzle

In a small bowl, whisk together 1 cup powdered sugar, 2 tbsp milk, and ¼ tsp vanilla extract until smooth and pourable. If it’s too thick, add a tiny bit more milk; if it’s too thin, add a bit more powdered sugar.

5. Serve & Enjoy

Drizzle the vanilla glaze over the slightly cooled cake for an extra sweet finish.
Slice and serve the cake warm or at room temperature. Pair it with a hot cup of coffee or tea, and enjoy the cozy fall vibes in every bite. 🍂✨

Tips for Success

Don’t Overmix the Batter: To keep your cake light and fluffy, mix just until the ingredients are combined.
Make It Ahead: This cake tastes even better the next day as the flavors have time to meld together. Store it in an airtight container at room temperature for up to 3 days.
Add Some Nuts: For a crunchy twist, you can add chopped pecans or walnuts to the crumble topping.

Why You Should Make This Pumpkin Spice Crumble Cake

This Autumn Pumpkin Spice Crumble Cake is the perfect way to celebrate the season. Whether you’re planning a cozy afternoon with friends or need a show-stopping dessert for your Thanksgiving table, this cake delivers all the warm, comforting flavors you want in a fall treat. The spiced pumpkin cake, buttery crumble topping, and sweet vanilla drizzle make it a dessert everyone will be asking for seconds!