Mashed sweet potato recipe?

I just got this off of Allrecipes.com . I plan on making it for Thanksgiving.


Praline Sweet Potatoes

4 cups mashed sweet potatoes
1/2 cup white sugar
2 tablespoons vanilla extract
4 eggs, beaten
1/2 pint heavy cream

1/4 pound butter
1 cup packed brown sugar
1/2 cup all-purpose flour
1 1/4 cups chopped pecans


Directions
1 Butter one 2 quart casserole dish. Preheat oven to 350
degrees F (175 degrees C).
2 In a mixing bowl, combine the sweet potatoes, sugar,
vanilla extract, eggs and cream. Blend well, and spread evenly
in casserole dish.
3 Prepare the topping by combining the butter, brown
sugar, flour and pecans. Mix until crumbly, and sprinkle over
sweet potato mixture.
4 Bake for 30 minutes in the preheated oven.

Here is how I make mine. I usually make one per person

Bake sweet potatoes in oven at 350 for about an hour (until soft) Remove skin and place in pot, add some butter and mash. Then add a pinch of sugar. Then I add sour cream to taste. Usually about 1 tbsp for 2 potatoes. Then add salt and pepper. Easy and yummy!

Here's my favorite way to make sweet potatoes.....

2 cups of mashed sweet potatoes (or yams)
1/4 cup of sugar
2 eggs beaten well
3/4 of a stick of butter
1tsp of nutmeg
1tsp of cinnamon

-Mix well and pour in to a GREASED casserole dish
-put in to a 400 degree oven for 20-30mins

TOPPING-
3/4 cup of brown sugar
3/4 stick of butter
3/4 cup of crushed corn flakes
1/2 cup of chopped pecans

-Back in the 400 degree oven for 10 mins

Ladies, I'm making this for Turkey day, but I'm preparing now.

Do I cook now for 30 minutes & then can just warm up on Turkey Day or are the canned yams already cooked?

Sorry I'm so clueless.....