I use this on The BEST Chocolate cake quite frequently, but it's delish on just about any other cake too. :)
Cream Cheese Frosting
2 - 8 oz Bricks Cream Cheese, softened
1/2 Cup (1 Stick) Butter, softened
2-3 Cups Powder Sugar
1 1/2 Tsp Vanilla
Mix butter and cream cheese until well combined. Add vanilla and combine. Slowly add in powdered sugar - after second cup, taste test. If you like it sweeter add the remaining cup.