These Pumpkin Crumb Cake Muffins are soft, warmly spiced and topped with a buttery cinnamon crumb topping. They're an easy fall breakfast or treat and make the kitchen smell amazing while they bake.
Preheat oven to 350°F. Line a 12-cup muffin pan with paper liners or lightly grease the cups.
Combine the flour, brown sugar, cinnamon and salt in a small bowl. Pour in the melted butter and stir with a fork until large crumbs form. Set aside.
In a medium bowl, whisk together the flour, baking soda, cinnamon, pumpkin pie spice and salt.
In a large bowl, whisk together the oil, granulated sugar, brown sugar, pumpkin puree, eggs, vanilla and milk until smooth.
Add the dry ingredients to the pumpkin mixture and gently stir just until combined. Don't overmix.
Divide the batter evenly among the 12 muffin cups. Sprinkle a generous amount of crumb topping over each muffin, gently pressing some of the crumbs into the batter.
Bake for 18–22 minutes, or until the muffins are risen and a toothpick inserted into the center comes out clean or with a few moist crumbs.
Allow the muffins to cool in the pan for about 5 minutes before transferring them to a wire rack.
Once the muffins have cooled, whisk together the confectioners' sugar, maple syrup, milk and a pinch of salt until smooth. If the icing is too thick, add a small splash of milk. If it's too thin, add a little more confectioners' sugar.
Drizzle the maple icing over the completely cooled muffins. Let the icing set for a few minutes before serving.
Use 100% pure pumpkin puree, not pumpkin pie filling.
Don't overmix the batter. Stir only until you no longer see streaks of dry flour for softer muffins.
When making the topping, leave some larger crumbs rather than mixing it until completely fine. Those bigger buttery pieces make the best crumb topping.
For a little extra bakery-style sweetness, you could drizzle the cooled muffins with a simple powdered sugar glaze.
Store covered at room temperature for about 2 days or refrigerate for longer storage.
Replace the all-purpose flour in both the muffins and crumb topping with a 1-to-1 gluten-free baking flour designed to replace all-purpose flour. Check the remaining packaged ingredients for gluten as needed.