Grand Marnier Crepe Souffle

Name: Grand Marnier Crepe Souffle
Ingredients: 6 large eggs; 1 stick unsalted butter, melted; 1 1/2 cups heavy cream; 2 tablespoons sugar; 1 tablespoon orange liqueur, such as Grand Marnier; Zest of 1 orange; 1/2 cup all-purpose flour; 1/2 cup whole-wheat flour; 1/2 cup heavy cream; 4 tablespoons unsalted butter; 3 tablespoons orange liqueur, such as Grand Marnier; 2 tablespoons all-purpose flour; 2 tablespoons brown sugar; Zest of 1 orange, plus additional for garnish; 8 large eggs, separated; Powdered sugar, for dusting