Cranberry Bliss Bars

For the Bars:

1. Preheat oven to 350F. Line an 8-by-8-inch pan with aluminum foil, spray with cooking spray; set aside.
2. In a medium microwave-safe bowl, melt the butter, about 90 seconds.
3. To the melted butter (allow it to cool slightly so you don't scramble the egg), add the egg, brown sugar, vanilla, and stir to combine.
4. Add the flour, salt, and stir until just combined, taking care not to over-mix or the bars will be tough.
5. Fold in 3/4 cup white chocolate chips, 1/2 cup cranberries, optional orange zest, and stir to combine.
6. Pour batter into prepared pan, smoothing it lightly with a spatula or offset knife if necessary.
7. Bake for 18 to 21 minutes, and center is set and golden or until edges begin to slightly pull away from sides of pan, or a toothpick comes out clean; do not overbake.
8. Allow bars to cool before frosting them. While they cool, make the frosting.

For the Frosting and Topping:

1. In a small microwave-safe bowl, melt the white chocolate on high power, about 1 minute, reheating in 10-second intervals, or until it can be stirred smooth. White chocolate is notorious for scorching so melt it very carefully, and slowly, heating in quick bursts, and keep a watchful eye; use a double boiler if that's easier.
2. To the bowl of a stand mixer fitted with the paddle attachment, combine cream cheese, about three-quarters of the melted white chocolate (about 3/4 cup, just eyeball it), 2 cups confectioners' sugar (I don't sift it because any tiny lumps will be covered up by sprinkled cranberries and white chocolate drizzle), vanilla, and beat until smooth and fluffy.
3. Start by mixing on low speed so sugar doesn't spray, and then beat on medium-high for about 3 minutes. Mixture will seem stiff at first but will loosen and fluff up after 2 to 3 minutes of beating on medium-high; stop and scrape down the sides of the bowl as necessary.
4. Add additional confectioners' sugar (I used about 2 3/4 cups, I like it on the thicker side) based on taste preference and desired frosting consistency.
5. Frost the bars; if you have excess, it will keep in an airtight container in the refrigerator for at least 1 month.
6. Evenly sprinkle 1/2 cup cranberries over the top of the frosted bars. Evenly drizzle bars with remaining melted white chocolate, reheating for a few seconds in the microwave if it has set up.
7. Allow bars to set up for at least 30 minutes before slicing and serving.