Streusel Sweet Potato Casserole

My 💯Th recipe! Who doesn't like sweet potato casserole!?!  This recipe calls for a streusel topping made with brown sugar, oats and walnuts. Yum Yum .... serves 6-8

Ingredients:

3 lbs sweet potatoes, peeled and cut into 1" cubes
1/2 stick butter (4 tablespoons)
3/4 cup brown sugar
1/2 cup heavy cream
1 teaspoon salt
1 tablespoon vanilla extract
1 teaspoon nutmeg
1/2 teaspoon cinnamon
2 cups mini marshmallows, or large ones cut in 4ths

Streusel Topping:

1 cup chopped walnuts
1/2 cup flour
1/2 stick of butter or 4 tablespoons
6 tablespoons brown sugar
1/4 cup rolled oats
1/4 teaspoon cinnamon

Directions:

Preheat oven to 375 degrees. Place the sweet potatoes in a large saucepan cover with one inch water and salt.  Bring to boil then reduce to simmer for 15 minutes or until tender (easily pierced with a fork). Drain. In the saucepan add the brown sugar, heavy cream, vanilla extract, nutmeg and cinnamon stir until blended then add 
the sweet potatoes and mash until smooth. Transfer to a 9" bakingdish. Top with the marshmallows.

Streusel topping: In a microwave safe bowl melt the butter. Then add the remaining ingredients, stir then pour on top of potatoes. Bake for 15-20 minutes or until streusel is crisp and marshmallows are lightly brown. Serve..Yum Yum!