Preheat oven to 350° F. Paper-line or grease muffin cups.
Combine flour, pumpkin pie spice, baking soda and salt in large bowl. Combine sugar, pumpkin, eggs, oil and juice in large mixer bowl; beat until just blended. Add flour mixture to pumpkin mixture; stir just until moistened. Spoon batter into prepared muffin cups, filling 3/4 full.
Bake for 15 to 17 minutes. Cool completely before removing from pan. Roll in cinnamon sugar if desired
Substitute a gluten free all purpose baking mix
Pumpkin Mini Muffins https://afewshortcuts.com/pumpkin-mini-muffins/