Step 1

First, mash the sweet potatoes through a fine mesh sieve and place them in a large mixing bowl.

Step 2

Then, stir the eggs, whole milk, vanilla extract, butter, and brown sugar.

Step 3

Mix until combined and transfer the mixture to a casserole dish well greased with butter.

Step 4

In another bowl, mix the flour with the brown sugar, chopped walnuts, and butter into a crumbly mixture and top the casserole.

Step 5

Bake in an already heated oven at 350 F or 180 C degrees for about 25 minutes.

Step 6

Serve and enjoy