Preheat oven to 350°F.
Spray 8 inch square baking pan with nonstick spray and set aside.
With a whisk or electric mixer, beat together brown sugar, spices, molasses, oil and egg.
In a separate bowl, combine flour, oats and baking powder.
Add to molasses mixture; stir until blended.
Spread in baking pan.
Bake for 18-20 minutes or until a toothpick inserted in centre comes out dry.
Cool on wire rack.
Cut into squares.
