In a large mixing bowl, add the flour, pumpkin spice, baking powder, baking soda, and salt. Whisk together. Set aside.
In a separate bowl, add the oil, granulated sugar, and brown sugar. Mix until all ingredients are combined.
Add the eggs, one at a time, mixing well in between each addition. I use a Danish dough whisk, but a hand mixer can also be used.
Add the sourdough discard. Mix well.
Add the pumpkin purée and vanilla and mix until you have a smooth, even batter.
Add the flour mixture, alternating with milk. Mix until all ingredients are just combined. Don’t overmix.
Using a large cookie scoop (3 tablespoons), scoop the batter into the prepared cupcake pan. Set aside.
Make the crumble. In a mixing bowl, whisk together the flour, sugars, and pumpkin spice.
Add the melted butter and mix until the mixture resembles coarse crumbs.
Use 1-2 tablespoons of the crumble to cover each pumpkin muffin.
Bake in the preheated oven for 5 minutes, then reduce the oven temperature to 350 °F for 20-22 minutes.
Cool in the pan for 2-3 minutes, then transfer to a cooling rack.
Notes
Make sure to use pumpkin puree, not pumpkin pie filling.For this recipe, I used sourdough discard, which gives a slightly more tangy flavor. You can also use a fed sourdough starter; the muffin will have more of a lift.I like baking my muffins at 425 degrees F for 5 minutes, then reduce to 350 degrees F to finish the baking time. This will lead to a taller muffin, crispy top, and perfectly moist inside crumb.Storage: Store in an airtight container at room temperature for 3 days or in the fridge up to 5 days.You can make the muffins dairy-free by using alternative milk and butter for the crumble. Flavors may vary.Recipe variations: Add chocolate chips to the batter (½ to ¾ cups) Chopped nuts (pecans, walnuts,...)
This recipe was calculated using the exact brands and measurements I used to make this recipe. If you are following a strict diet please note changing anything will cause the nutritional info to change. My calculations are intended as a guide only.