Sweet Potato Casserole - No Getting Off This Train

Ingredients

• 1/2 cup flour
• 1 cup brown sugar
• 1 stick butter, cold or almost frozen
• 1/2 cup chopped pecans
• 1 1/2 pounds sweet potatoes (About 5 cups mashed)
• 1/2 cup brown sugar
• 2 eggs
• 1/2 cup milk
• 1/2 stick melted butter
• 1 teaspoon vanilla extract
• 1 teaspoon salt
• 1/2 teaspoon cinnamon
• 1/4 teaspoon nutmeg