Preheat the oven to 400 degrees F.

Clean 5 lbs. sweet potatoes, prick with fork, and bake for 1 to 1 1/4 hours. Cool on wire rack.

Combine the cooled potato flesh with the following:

• 1/2 stick unsalted butter
• 1/2 cup brown sugar
• 1/4 cup maple syrup
• 1 teaspoon salt
• 3/4 teaspoon cinnamon
• 1 teaspoon vanilla 

Add to the mixture:

• 1 cup mini marshmellows
• 1/2 cup ground peacans
• 1 beaten egg

Butter a baking dish and add mixture to dish.  Combine the following to top:

• 1 cup mini marshmallows
• 1/4 cup brown sugar
• 1/2 cup ground pecans

Reduce oven to 375 degrees F and bake for 40 - 50 minutes depending on size of baking dish.