Preheat your oven to 350℉ (177℃). Butter a 9-inch (23-cm) nonstick springform pan (see note about pans below) and line with parchment.
First, finely grind your graham crackers in a food processor, high speed blender or by placing in a plastic bag and smashing them with a rolling pin or a measuring cup. Be sure to break up any larger pieces. Place in a medium mixing bowl.
Add in the pecans (if using) and brown sugar stirring to combine. Drizzle the butter over on top and stir with a fork until it resembles coarse, wet sand.
Firmly press the mixture evenly over the bottom of prepared pan lined with parchment. Bake in the center of the oven for 11 minutes or until it starts to turn a little golden around the edges. Set the crust aside to cool completely before adding any filling.