In a large mixing bowl, mix together the melted butter and flour, forming a soft dough.
Stir the chopped pecans into the dough until they’re all mixed in.
Press the dough into a 9×13 baking dish.
Bake at 350° F for about 20 minutes, or until the edges of the crust begin to turn a nice golden brown (oven times may vary). Then let the crust cool before adding any filling.
Notes
If you are making this crust with a recipe where you bake the crust with the filling, just bake it according to the instructions for that particular recipe.