1 1/2 sticks unsalted butter
4 ounces semisweet chocolate, chopped
1 cup sugar
2 large eggs
1/4 teaspoon salt
1/4 teaspoon vanilla extract
1/3 cup all-purpose flour
Cream Cheese Frosting:
1/2 stick butter, room temperature
8 ounces cream cheese, room temperature
4 cups powdered sugar
3 tablespoons orange juice
1 tablespoon orange zest