Preheat oven to 375 degrees. Prepare 9 x 9 inch pan with cooking spray and set aside.
In mixer, combine shortening and sugar till creamy.
Add egg and mix. Next add yogurt and mix well.
In small bowl combine flour, cocoa, salt, baking powder and mocha flavoring. Whisk together.
Add flour mixture to mixer. Keep mixing at low speed until all is incorporated.
Pour into prepared pan.
Pour melted Biscoff spread onto top of brownies. Using a knife swirl the spread into the brownie mixture.
Bake for about 20 minutes or until toothpick inserted comes out clean.