Creme Pat

Step 1
Whisk 1/3 of the cold milk and cornstarch together in a medium bowl until smooth.

Step 2
Pour remaining milk and sugar into a small saucepan. Heat over medium heat, stirring occasionally, until milk begins to simmer; remove from heat and set aside.

Step 3
Stir egg and egg yolks into cornstarch mixture; gradually whisk in hot milk. Pour mixture back into the small saucepan; cook over low heat, stirring constantly until thickened, about 3 to 5 minutes.

Step 4
Remove custard from heat and let cool slightly; whisk in butter and vanilla until smooth.