Lemon Blueberry Pavlova

Ingredients (14)

• ✓ ½ cup unsalted butter
• + 4 large eggs add to pantry
• + 2 tablespoons lemon zest add to pantry
• + 1 pinch salt add to pantry
• ✓ ½ cup white sugar
• + ¼ cup lemon juice add to pantry
• + cooking spray add to pantry
• + 1 tablespoon cornstarch add to pantry
• + 1 pinch cream of tartar add to pantry
• + ¼ teaspoon pure vanilla extract add to pantry
• + 1 cup blueberries add to pantry
• ✓ ½ cup cold water
• + ½ cup fresh blueberries, or more to taste add to pantry
• + 1 sprig fresh mint add to pantry