Brown Butter Pumpkin Meringue Cupcakes

Name: Brown Butter Pumpkin Meringue Cupcakes
Prep time: 30 min
Cook time: 20 min
Total time: 50 min
Cuisine: American
Ingredients: 1/2 cup unsalted brown butter (room temperature); 1/2 cup light brown sugar; 1/2 cup granulated sugar; 2 large eggs (room temperature ); 1 teaspoon vanilla extract; 1 1/4 cup pumpkin puree; 1 1/2 cups cake flour (substitute all purpose flour); 1 1/2 teaspoons baking powder; 1 1/2 teaspoons pumpkin pie spice; 1/2 teaspoon kosher salt; 5 large egg whites (room temperature ); 1/2 teaspoon cream of tartar; 1 1/2 cups light brown sugar