S'Mores Bars

I recently made these S'mores Bars, which is now one of my new favorite desserts!

S'mores Bars (Adapted from this recipe from BettyCrocker.com by using a Sugar Cookie recipe from Allrecipes.com for the crust)

Ingredients:

• 2 3/4 c all-purpose flour
• 1 t baking soda
• 1/2 t baking powder
• 1 c butter, softened
• 1 1/2 c white sugar
• 1 egg
• 1 t vanilla extract
• 1 c graham cracker crumbs
• 3 c chocolate chips
• 4 c miniature marshmallows

Directions:

• Preheat oven to 375 degrees F (190 degrees C). 
• In a small bowl, stir together flour, baking soda, and baking powder. 
• In a separate bowl, cream together the butter and sugar until smooth. 
• Beat in egg and vanilla. 
• Mix in dry ingredients. 
• Mix in graham cracker crumbs.
• Press mixture evenly into bottom of 9x13-inch pan.
• Bake for 18-20 minutes.
• Sprinkle chocolate chips over crust and let stand for approximately 5 minutes.
• Spread chocolate evenly over crust.
• Sprinkle marshmallows over chocolate.
• Broil for 30 seconds to 1 minute - WATCH CLOSELY, AS MARSHMALLOWS WILL BROWN QUICKLY -  you don't want them to burn!
• Cool for an hour before cutting into bars.