In a bowl, using a fork, work the butter with the sugar until it is creamy. Add flour, baking powder and oats. Mix to incorporate all, it should look crumbly. Remove 1 cup of the crumbs and set aside.
Add eggs, one at a time, and stir until incorporated. Put the dough in the greased pan, spread evenly.
Place the pumpkin pie filling on top of the dough.
Sprinkle remaining crumbs.
Bake for 35 minutes until golden.
Top with the miniature marshmallows and broil until brown, about 3-4 minutes. Keep an eye on them, they can burn in seconds.
Cool in the pan, cut and serve. Use a knife heated in boiling water to easily cut the squares.
Calories From Fat
% Daily Value*
Total Fat 0g
Saturated Fat 0g
Trans Fat 0g
Total Carbohydrates 0g
Dietary Fiber 0g
* Percent Daily Values are based on a 2,000 calorie diet.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.