Step 1

Preheat the oven to 350 degrees. Mash the sweet potatoes and add the melted butter, milk, sugar, vanilla, beaten eggs, and a pinch of salt. Stir until incorporated. Pour into a shallow baking dish or a cast iron skillet.

Step 2

Combine the butter, brown sugar, flour, and pecan pieces in a small bowl, using your fingers to create moist crumbs. Sprinkle generously over the casserole. Bake for 25-35 minutes, until the edges pull away from the sides of the pan and the top is golden brown. Let stand for the mixture to cool and solidify a little bit before serving.