01 -
Position the oven rack in the middle, then set the temperature to 175°C (350°F).
02 -
Apply non-stick spray to a 23 x 33 cm (9x13 inch) rectangle pan.
03 -
Stir the flour, soda, spices, and salt until blended.
04 -
Whip up the butter, molasses, both sugars, and vanilla until it’s airy.
05 -
Blend the egg into the mix thoroughly.
06 -
Add the dry mixture into the wet batter and mix until combined.
07 -
Evenly spread the dough in the prepared pan.
08 -
Bake for 15–20 minutes or until a toothpick inserted in the center comes out without batter.
09 -
Let the dessert cool completely before moving on.
10 -
Using a mixer, beat the softened cream cheese and butter for the frosting.
11 -
Add powdered sugar and vanilla to the frosting mix, and beat until smooth and fluffy.
12 -
Spread frosting across the cooled bars and garnish with festive sprinkles if desired.
13 -
Slice into 24 squares and serve up this treat.