- cooking spray
- Casserole:
- 3 cups cut canned yams
- 4 eggs, slightly beaten
- 1 cup water
- 1 cup evaporated milk
- 1 cup brown sugar
- 1 cup white sugar
- 1 cup butter, softened
- 2 teaspoons vanilla extract
- Topping:
- 2 cups all-purpose flour
- 1 cup butter, softened
- 1 cup brown sugar
- 1 cup white sugar
- 4 teaspoons water
- 4 teaspoons baking powder
- 1 teaspoon salt
- 4 cups chopped pecans
- 2 cups flaked coconut (optional)
- Preheat oven to 350 degrees F (175 degrees C). Prepare a 12×9-inch baking dish with cooking spray.
- Beat yams, eggs, 1 cup water, evaporated milk, 1 cup brown sugar, 1 cup white sugar, 1 cup butter, and vanilla extract together in a large bowl with an electric hand mixer until smooth; spread into prepared baking dish.
- Mix flour, 1 cup butter, 1 cup brown sugar, 1 cup white sugar, 4 teaspoons water, and baking powder together in a separate bowl. Stir pecans and coconut into the flour mixture and sprinkle over the yam mixture.
- Bake in preheated oven until the topping is lightly browned, about 45 minutes. Cool at room temperature 10 to 15 minutes before serving.