Strawberry-Rhubarb Blondies - Good Neighbor Pharmacy

Ingredients

• 1 cup unsalted butter, melted
• 1 1/4 cup packed brown sugar
• 2 large eggs
• 1 teaspoon vanilla extract
• 2 1/2 cups all-purpose flour
• 1/2 teaspoon baking powder
• 1 teaspoon salt
• 1 cup fresh strawberries, cored and chopped
• 1 cup fresh rhubarb, thinly sliced
• Nonstick cooking spray
• 1/4 cup cream cheese
• 1/4 cup powdered sugar, sifted
• 3 to 4 tablespoons whole milk