Foolproof Buttercream Frosting

1. 1

   In mixer bowl at high speed, beat egg yolks until pale yellow, 4 to 5 minutes.

2. 2

   Butter a 2-cup glass measuring cup (you will need it for the next step--so butter it now).

3. 3

   In a 2- to 3-quart pan, combine sugar and corn syrup.

4. 4

   Cook over medium-high heat and stir until sugar is dissolved and mixture comes to a rolling boil.

5. 5

   Immediately pour into the butter glass measuring cup.

6. 6

   Beating constantly at medium speed, pour syrup in a thin, steady stream into egg yolks (avoiding beaters).

7. 7

   Continue beating until mixture is at room temperature (7 to 10 minutes).

8. 8

   Add butter and vanilla.

9. 9

   Beat just until smooth.

* Per serving · 4 servings · Values may vary.