Good-Cooking - Grand Marnier Orange Butter Cake

Ingredients

• 2 cups plus 2 tablespoons flour
• 1 teaspoon baking powder
• 1/4 teaspoon salt
• 1 cup butter at room temperature
• 1 1/2 cups granulated sugar
• 2 eggs
• 3/4 cup orange juice
• 3 tablespoons orange zest
• 1 teaspoon vanilla extract
• 1 teaspoon orange extract
• 2/3 cup orange marmalade
• 3 tablespoons Grand Marnier
• 1 1/2 cups confectioners' sugar sifted
• 1 tablespoon unsalted butter melted
• 1/2 teaspoon orange extract