1 2/3 cups all-purpose flour
2 pounds unsalted butter
3 cups white sugar
1 1/2 teaspoons baking powder
1 tablespoon cornstarch
2 eggs, beaten
1/3 cup pumpkin puree
1 teaspoon baking soda
2 teaspoons Worcestershire sauce
Preheat oven to 350 degrees F (175 degrees C). Spray muffin liners with cooking spray.
In a large bowl, mix flour, sugar, baking powder, cornstarch, eggs, pumpkin puree, baking soda and pepper sauce until smooth. Fold in 3/4 cup of the pumpkin mixture. Fold into the flour mixture. Drop muffin by teaspoonfuls onto the prepared muffin cups. Pour the remaining batter over the tops of the muffins, pressing the lightly to seal.
Bake at 350 degrees F (175 degrees C) for 20 minutes. Let cool on a wire rack.