Roasted Sweet Potato Casserole with Praline Streusel

5 lbs. sweet potatoes, baked and peeled
1.2 c. orange juice
1/2 tsp. fresh grated orange zest
3 large eggs, lightly beaten
1/2 c. sugar
1 1/2 tsp. baking powder
1 1/2 tsp. vanilla
2 Tbsp. butter

Praline Streusel
2 c. chopped pecans
1 c. packed brown sugar
1/2 c. butter
1 tsp. vanilla
1/8 tsp. salt


Preheat oven to 350 degrees, grease a 9x13 casserole dish.  Mash sweet potatoes, stir in orange juice and zest.  Fold in eggs, sugar, baking powder, vanilla and butter.  Pour the sweet potato mixture into the prepared pan.  (At this point the casserole can be tightly covered and refrigerated until ready to serve).
Make praline streusel:  In a saucepan, place pecans, brown sugar, butter, vanilla, and salt and bring to a boil.  Cook 2 minutes, then pour over sweet potato mixture and bake for 40-45 minutes.