Preheat oven to 350°F and line a rimmed sheet pan with aluminum foil.
Frivolously grease the foil with butter and line the baking sheet with graham crackers, breaking them the place essential to make them match.
Mix butter, brown sugar, pecans, and salt in a medium saucepan over medium warmth. Deliver to a boil and let cook dinner 2 minutes, stirring continually.
Take away from warmth and stir in vanilla. Instantly pour scorching combination over graham crackers and unfold combination to edges of pan utilizing a spatula. Be certain that pecans are evenly distributed and that crackers are coated.
Bake till bubbly, about 10 minutes.
Permit to chill fully and break into items. Take pleasure in!