Step 1

Preheat the oven to 375°.

Step 2

Add the potatoes to a cookie sheet tray lined with parchment paper or foil and bake in the oven at 375° for 60-70 minutes or until tender.

Step 3

Remove the potatoes pull the skin off and discard. Add the cooked insides to a large bowl.

Step 4

Add the eggs, butter, brown sugar, cinnamon, salt, and pepper to the bowl and mash with a hand masher or electric hand beater until smooth.

Step 5

Transfer the mashed sweet potatoes to a 13x9 casserole dish sprayed with non-stick spray. Set aside.

Step 6

In a separate large bowl, cut together the flour, brown sugar, pecans, and butter until the butter is the size of rice.

Step 7

Fold in the marshmallows and then evenly sprinkle the streusel over the mashed sweet potatoes, completely covering them.

Step 8

Bake in the oven at 375° for 25 to 30 minutes or until the marshmallows are browned. Serve.