Sweet Potato Pie

http://allrecipes.com/recipe/sweet-potato-pie-i/

I was excited while baking this. ^^ The comment on allrecipes were raving how yummy it was. I took into consideration the tips they suggested.

I modified the recipe a bit...
I bought the pumpkin pie spice instead. I wasn't sure how much I should use, but I figure 1/2 + 1/2 nutmeg and cinnamon equals to 1 teaspoon of pumpkin pie spice. My dad needs to watch his blood sugar, so I used less than 1/2 cup of brown sugar. I worried about my vanilla extract because my parents turn off the fridge when they went to China. So I tasted the vanilla extract, it tasted a bit acidic and bitter almost like rum or beer. I didn't know what it is supposed to taste like so I omitted that from pie filling. My pie filling was a bit runny, and I felt like it wouldn't set when baked so I mixed in 1 tablespoon of flour. Know I think I should add another tablespoon of flour....

Need:
1 large sweet potato
1/2 cup butter, softened
1 cup white sugar
1/2 cup milk
2 eggs
1/2 teaspoon ground nutmeg
1/2 teaspoon ground cinnamon
1 teaspoon vanilla extract
1 (9 inch) unbaked pie crust

Need To:
Boil sweet potato whole in skin for 40 to 50 minutes, or until done. Run cold water over the sweet potato, and remove the skin.

Break apart sweet potato in a bowl. Add butter, and mix well with mixer. Stir in sugar, milk, eggs, nutmeg, cinnamon and vanilla. Beat on medium speed until mixture is smooth. Pour filling into an unbaked pie crust.

Bake at 350 degrees F (175 degrees C) for 55 to 60 minutes, or until knife inserted in center comes out clean. Pie will puff up like a souffle, and then will sink down as it cools.