Casserole dish to be baked.
- Carbohydrate 99.1046057322829 g
- Cholesterol 130.567674215724 mg
- Fat 40.3295469093081 g
- Fiber 4.07150007077462 g
- Protein 5.46617729871094 g
- Saturated Fat 17.9017871940558 g
- Serving Size 1 1 Serving (258g)
- Sodium 9575.30725999472 mg
- Sugar 95.0331056615083 g
- Trans Fat 2.67151518273296 g
- Calories 757 calories
Step-by-step
- Pre-heat your oven to 375 degrees. Grease a casserole dish (about 2 1/2 quart size)
- Combine the sweet potatoes, sugar, eggs, vanilla, buttermilk and butter in a medium bowl using an electric mixer or by hand.
- Pour into your casserole dish.
- Bake at for 25-30 minutes. (Or if you want to make this dish ahead of time, cover and store in the fridge for up to 2 days. Take it out and bake uncovered.)
- While it is baking, make the topping. Combine the flour, pecans, butter and brown sugar in a small bowl. When the casserole is done baking remove from oven and sprinkle topping over the top. Bake for an additional 10-15 minutes. You want a lightly browned, crunchy top.
- Let it sit for about 30 minutes before serving.
Unlike a traditional savory mash seasoned primarily with salt and black pepper, this casserole leans heavily into the dessert spectrum by pairing mashed roots with refined sugars, dairy, and a distinct flour-and-pecan crust. Roasting the roots whole in a 375-degree oven until completely tender yields far better starch gelatinization than boiling them in water, which waterlogs the flesh and ruins the final density. Piercing the skins with a fork allows steam to escape during the 30-to-45-minute roasting window, concentrating the natural sugars inside each tuber before it ever meets the mixing bowl.
Achieving structural integrity in the base relies entirely on proper incorporation of the eggs and buttermilk. Whisking two eggs thoroughly into the warm potato mixture creates a protein network that coagulates during the initial 25-to-30-minute bake, preventing the casserole from slumping into a watery puree when portioned. Buttermilk introduces targeted acidity that cuts through the heavy sweetness of the brown sugar and granulated sugar, though standard whole milk functions as an adequate 1-to-1 substitute if acid is unavailable.
Texture remains the defining metric for success here, pivoting on the sharp contrast between the velvety interior and the crumbly surface layer. Adding the pecan and flour topping halfway through the baking cycle protects the nuts from burning while allowing the butter and sugar to caramelize properly into a crisp crust. Pulling the dish from the oven the moment the edges turn lightly browned prevents the pecans from developing a bitter flavor profile.
Advance preparation offers genuine scheduling flexibility without sacrificing quality because the assembled unbaked dish holds safely covered in the refrigerator for up to 48 hours. Allowing the baked casserole to rest undisturbed for 30 minutes before serving lets the internal starches cool just enough to ensure clean cuts, while the residual heat maintains optimal temperature throughout the interior.
