In an 8 cup microwave bowl mix 2 slightly beaten egg yolks and 1/3 cup cold water with the contents of the pouch. Add 2 cups of boiling water. Cook uncovered at HIGH (100%) 2 to 4 min. or until mixture is starting to boil and thicken, stirring twice. Stir in 1 tbsp butter.
Proceed according to Step 2 of stovetop directions.
NOTE: Cooking times are tested for 700-watt ovens; increase by 1-2 min., or until filling thickens for lower wattage ovens.