Preheat oven to 350 F
Combine custard ingredients and whisk until they are fully incorporated. Pour into a 9x13 casserole dish.
Mix all topping ingredients but the butter and pecans in a bowl and sprinkle evenly across the pumpkin custard.
Spoon melted butter over the top, try to keep it evenly distributed.
Sprinkle Pecans over top and bake at 350F for 1 hour.
Let stand for at least 1 hour before eating