Prepare a square nonstick 8-inch baking tray with cooking oil spray, and wipe the excess over with a paper towel
Combine the butter and the cookie butter in a microwave safe bowl and melt for about 20-30 seconds in the microwave, OR alternatively in a small saucepan over low-medium heat while stirring, but do not boil. Pour into a medium bowl and whisk well until they're combined. Allow to cool slightly, and stir in the brown sugar, egg, syrup and vanilla, and mix well until combined.
Add the flour, baking powder, salt, ginger and cinnamon, mixing slowly until a soft dough forms. Do not over beat. Fold half of the caramel chips in through the batter, and pour batter into prepared pan. Sprinkle remaining chips on top.
Bake at 176C | 350F for about 20-25 minutes or until a toothpick comes out clean (or slightly dirty for fudgier blondies). Do not over bake or they will become dry. Allow to cool on a wire rack and cut into 16 squares. Serve warm with ice cream or frozen yoghurt, or plain! They don't need any accompaniments.
Notes
Store in an air tight container at room temperature for up to 4 days.