what kind of iceing to cover a hole key lime cake? IS IN CREAM CHEESE?

Answer 1

Key Lime Glaze
2 c. powdered sugar
1/3 c. Key lime juice
Mix well and pour over cake.

OR;

8 tablespoons (1 stick) unsalted butter, softened
1 package (8 oz.) cream cheese, softened
2 tablespoons key lime juice
1 teaspoon key lime zest or lemon zest
4-5 cups confectioners’ sugar

In large bowl, cream butter, cream cheese, juice and zest with electric mixer until light and fluffy.
Add 4 cups confectioners' sugar, one cup at a time; continue beating until light and fluffy.
If icing is too thin add additional confectioners' sugar 1 tablespoon at a time.
Makes about 3 cups.