Preheat oven or toaster oven to 350F. Grease a single muffin cup or place a paper liner in a metal measuring cup. In a small bowl, whisk dry ingredients together (flour, baking powder, pumpkin pie spice) then add remaining wet ingredients.
Stir until combined, adding a little extra nondairy milk if necessary. Gently spoon into muffin cup and bake 15-18 minutes, until firm to the touch and a toothpick inserted in the center comes out clean.