Fall Crumble Cake

Time :1 hour 10 minutes
Yield :15 servings

Recipe Background

Fall Crumble Cake blends autumn spices with a crunchy oat topping, perfect for gatherings.
I vividly remember the first campus bake sale I organized during my sophomore year in college. It was autumn in New England, the trees ablaze with colors that made you feel like you were living inside a postcard. I needed something that screamed fall, so naturally, pumpkin had to make an appearance. Enter my Fall Crumble Cake. The secret was leaning into the nostalgic allure of pumpkin pie spice combined with ground cinnamon. These spices are to autumn what a cozy scarf is to your neck.
Enthusiastically, I scavenged through the student kitchen pantry, relieved to find cans of pumpkin stashed next to a haphazard collection of rolled oats and bags of pecans. Those were the days of experimenting with textures, and that crumble—made with oats, brown sugar, and chopped pecans—added the perfect crunchy contrast on top of the moist cake. Pro tip: refrigerating the crumble before baking keeps it deliciously crisp. One wise baking mentor once whispered, ‘Better the pecans are crisp than soggy!’
As the aroma of spiced cake wafted through the communal hallway, curious students and professors flocked to our little stall. The cake disappeared faster than I could slice it, which taught me the lasting magic of good dessert: simplicity with a flair. I recommend cutting generous squares once cooled to get those clean edges. Those were warm, joyful days, filled with laughter and cinnamon-scented memories, proving that food could build connections—and I’ve never looked back since.

Ingredients

For the crumb topping:

  • 1 cup regular rolled oats
  • 1/2 cup all-purpose flour
  • 1/2 cup brown sugar packed
  • 6 tablespoons butter
  • 1/2 cup pecans or walnuts chopped

For the pumpkin cake:

  • 2 1/2 cups all-purpose flour
  • 2 teaspoons baking soda
  • 2 teaspoons ground cinnamon
  • 1 teaspoon pumpkin pie spice
  • 1/2 teaspoon salt
  • 1 cup brown sugar packed
  • 1 cup granulated sugar
  • 3/4 cup unsalted butter melted
  • 2 eggs
  • 1 (15-ounce) can pumpkin

Directions

  • Preheat the oven to 350 degrees F.
  • Grease a 9x13-inch baking pan with cooking spray or butter.
  • In a medium-sized bowl, combine the rolled oats, 1/2 cup of the flour, and 1/2 cup of the brown sugar.
  • Using a pastry blender, cut in 6 tablespoons of the butter until pea-sized crumbs form.
  • Stir in the pecans and refrigerate until ready to use.
  • In a large bowl, combine the remaining flour, the baking soda, the cinnamon, the pumpkin pie spice, and the salt.
  • In another large bowl or the bowl of a stand mixer, beat the remaining brown sugar, the granulated sugar, 3/4 cup of the melted butter, and the eggs using a stand mixer or a hand mixer on medium speed until well-combined, about 2 minutes.
  • Add the pumpkin and beat for 30 seconds.
  • Add the flour mixture to the wet ingredients mixture and beat on low speed until well-combined.
  • Spread the cake batter in the prepared baking pan.
  • Top the batter with the crumble topping.
  • Bake until a toothpick inserted into the center comes out clean, about 55 minutes-1 hour.
  • Let the cake cool completely.
  • Slice and serve.
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