HEAT oven to 350°F. Coat 2 (9x5-inch) loaf pans with no-stick cooking spray.
COMBINE flour, baking powder, baking soda, pumpkin pie spice and salt. Beat pumpkin, oil, sugar and eggs in bowl with electric mixer until well blended. Add dry ingredients; mix well. Divide batter between prepared loaf pans.
BAKE 50 to 55 minutes or until toothpick inserted in center comes out clean. Turn oven to broil. Sprinkle marshmallows evenly over breads. Broil 3 minutes or until marshmallows are lightly browned. Cool completely.
Serving Size (1 slice, 1/18 of recipe), Calories 330 (Calories from Fat 120), Total Fat 13g (Saturated Fat 2g, Trans Fat 0g), Cholesterol 30mg, Sodium 260mg, Total Carbohydrate 50g (Dietary Fiber 1g, Sugars 28g), Protein 4g; Percent Daily Value*: Vitamin A 4%, Vitamin C 0%, Calcium 2%, Iron 10%.
*Percent Daily Values are based on a 2,000 calorie diet.