Creating Cranberry Bars with Cream Cheese Frosting is a straightforward process. Follow these step-by-step instructions for a successful outcome:

1. Preheat Oven: Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking pan.
2. Prepare the Cranberries: If using fresh cranberries, rinse and dry them. If using frozen, allow them to thaw and drain excess moisture.
3. Mix Butter and Sugar: In a large mixing bowl, beat the softened butter and granulated sugar together until light and fluffy.
4. Add Eggs and Vanilla: Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
5. Combine Dry Ingredients: In another bowl, whisk together flour, baking powder, and salt.
6. Combine Mixtures: Gradually add the dry ingredients to the butter mixture, stirring until just combined.
7. Fold in Cranberries: Gently fold the cranberries into the batter until evenly distributed.
8. Pour Batter: Spread the batter evenly into the prepared baking pan.
9. Bake: Bake in the preheated oven for 30-35 minutes or until a toothpick inserted in the center comes out clean.
10. Cool Bars: Remove from the oven and allow the bars to cool completely in the pan on a wire rack.
11. Prepare Frosting: In a medium bowl, beat the softened cream cheese until smooth. Gradually add powdered sugar and milk, mixing until creamy.
12. Frost Bars: Once the cranberry bars are completely cool, spread the cream cheese frosting evenly over the top.
13. Cut and Serve: Cut into squares and serve.