Apple Pancakes with Cinnamon Butter

1/2 cup (1 stick) unsalted butter , room temperature

1/2 cup powdered sugar

1 teaspoon ground cinnamon

1/2 teaspoon grated orange peel Pancakes

2 teaspoons fresh lemon juice

1 teaspoon grated lemon peel

2 medium Granny Smith apple s (scant 1 pound), peeled, halved, cored

1 cups all purpose flour

2 tablespoons (packed) golden brown sugar

2 1/2 teaspoons baking powder

1/2 teaspoon salt

3/4 cup whole milk

2 large egg s

1/2 cup (1 stick) unsalted butter , melted, divided