Soft, fluffy, and studded with crunchy nuts, these easy pumpkin walnut muffins are a cozy fall treat. Infused with warm cinnamon, pumpkin pie spice, and a hint of orange, they come together quickly for the ultimate autumn breakfast or afternoon snack.
Preheat oven to 350°F / 175°C. Line a 12-count muffin tin with paper liners.
In a large mixing bowl, whisk together the flour, spice mix, baking soda, baking powder, salt, and ½ cup of the chopped walnuts.
In a separate bowl, beat the eggs, granulated sugar, pumpkin puree, vegetable oil, and orange juice until well blended.
Add the dry flour mixture to the wet pumpkin mixture in 3 batches, stirring gently just until moistened between each addition (be careful not to overmix!).
Using an ice cream scoop, fill each muffin liner about three-quarters full. Sprinkle the tops with the remaining 2 tablespoons of chopped walnuts.
Bake for 25 to 30 minutes, or until a wooden toothpick inserted into the center comes out clean.
Allow the muffins to cool in the pan on a wire rack for 10 minutes, then transfer them directly to the rack to cool completely.