Preheat oven to 350 degrees
1Lightly butter and flour and 8 x 8 pan.
2Whisk together the melted butter and sugar in a bowl.
3Add the egg, vanilla extract and Dennis' Mango Habanero BBQ Sauce and whisk.
4In a separate bowl, add the flour, baking soda, baking powder, and salt and mix together.
5 Add to the wet ingredients and mix.
6Bake for 20 -25 minutes or until done.
7 Cool in pan
Cut into 9 squares