Preheat oven to 350 degrees F (175 degrees C). Grease a 9x13 inch baking pan.
In a medium bowl, mix together the graham cracker crumbs, melted butter, sugar, and baking powder. Stir until evenly blended.
Press the mixture into the prepared pan. Bake in preheated oven for 8 to 10 minutes, until the edges are lightly browned.
Cool in the pan for 10 minutes before cutting into bars.
Interesting Facts
Graham crackers were invented in 1829 by Sylvester Graham.
Graham crackers are named after Sylvester Graham, an American Presbyterian minister who believed that eating a strict vegetarian diet was essential for good health.
Graham crackers are a popular snack food and are often used as a base for other desserts, such as cheesecake.