Sweet Potato Casserole with Marshmallow

Name: Sweet Potato Casserole with Marshmallow
Prep time: 2 h
Total time: 2 h
Cuisine: American
Ingredients: 3 1/2 lb. sweet potatoes; 1/2 c. butter, melted, plus more to grease the casserole dish; 1/2 c. heavy cream; 1/3 c. light brown sugar; 3 large eggs; 1 1/4 tsp. salt; 1 1/2 tsp. cinnamon; 3/4 tsp. smoked paprika; 1/4 tsp. cayenne pepper (optional); 1/2 c. all-purpose flour; 1/2 c. light brown sugar; 1/2 tsp. cinnamon; 1/4 tsp. salt; 1 c. chopped pecan; 1/4 c. butter, melted; 2 c. mini marshmallows, divided