Place potato in a Dutch oven, and cover with water. Bring to a boil. Reduce heat; simmer 12 minutes or until tender. Drain.
Combine the half-and-half and next 4 ingredients (half-and-half through egg) in a large bowl, stirring with a whisk. Add potato to egg mixture; beat with a mixer at medium speed until smooth. Spoon potato mixture into a 13 x 9-inch baking dish coated with cooking spray.
Combine flour and sugar in a food processor; pulse to combine. Add chilled butter; pulse until mixture resembles coarse meal. Stir in pecans; sprinkle over potato mixture.
Cover and bake at 375° for 15 minutes. Uncover and bake an additional 25 minutes or until the topping is browned and the potatoes are thoroughly heated.
I've made this dish for every holiday since 2002, mainly Thanksgiving, Christmas, and Easter. I once hated sweet potatoes but my husband loves them so I tried the recipe and was surprised how much I liked it. I cut the recipe in half when feeding 8 or fewer guests, but I keep the amount of streusel the same. I've also started cooking the potatoes in the microwave as this reduces the amount of effort down by at least half. I bake it in stoneware and wrap it in a towel for potlucks and it will stay hot (and I mean HOT!) for at least an hour or two.
Made this for the first time this year, and it was a huge hit! I loved the crispy topping. Made as recipe stated except I halved the recipe, and I roasted the sweet potatoes instead of boiling. Accidentally put the pecans in the processor with the other streusel ingredients instead of stirring them in after...didn't seem to hurt it. I will definitely be making this again. I made it in the morning, kept topping separate, and then put on topping and baked later in the day. I wouldn't hesitate to make it the night before next time. Only thing is, when reheating leftovers in the microwave, you lose the crispiness of the topping. It is still good, but I am considering reheating leftovers in the oven or under the broiler to see if the crispiness of the topping can be preserved.
Made this recipe for the first time at Thanksgiving 2009. My family loved it and every special occasion since then they have requested that I pleaseeeee make it.
Tastes delicious, even those that don't care for sweet potatoes thoroughly enjoy it. I make it according to the recipe except for adding a cup of pecans. It is also a great make ahead dish which can go in the oven when you take the turkey or ham out!
My boyfriend just loved this recipe. He has a major sweet tooth, so we added marshmallows at the end and roasted them until they were a semi dark brown. This really finished it off nice. I never liked sweet potato casserole, but I have to say that this is a really good dish!
I made this recipe last thanksgiving and everyone just loved it. Even my pickey 10 yr old daughter. I will definately be making it again this year. I would maybe add a little less vanilla next time. Otherwise it's perfect.
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