Preheat oven to 350ºF. Grease a mini muffin pan for 24 tarts
In a large bowl, whisk together flour, graham cracker crumbs and baking powder; set aside.
Beat butter and sugar until light in a mixer bowl, about 2 minutes. Beat in egg until well combined. Reduce mixer speed to low and slowly beat flour mixture into butter mixture.
Reserve 1/4 of the dough and set aside. Divide the dough into 24 equal pieces. Roll the dough into walnut sized balls and place into mini muffin cups; flatten slightly.
Add 4 chocolate chips to the bottom of each cup. Then add 4 marshmallows. Add pieces of the reserved dough to the tops. Sprinkle with a few more chocolate chips.
Bake for about 20 minutes until tops are browned.
Remove from pans after they have cooled for about 10 minutes.
Recipe by Recipes Food and Cooking at https://recipesfoodandcooking.com/2013/05/23/smore-tarts/