Created by KittenCal on September 30, 2011
Step 1: In the microwave (I use my 8-cup Pyrex measuring cup for this) or on top of the stove (using a heavy-bottomed sauce pan) combine sugar, cornstarch, lemon zest, lemon juice, egg yolks, half and half and whipping cream (can use 2 cups half and half cream if desired and omit the whipping cream); whisk to combine.
Step 2: Microwave on HIGH until thick (removing about every minute to stir, cooking time should be about 5-8 minutes).
Step 3: Cook until thickened.
Step 4: Stir in butter; whisk until butter has melted and the mixture is smooth.
Step 5: Cool to almost room temperature, stirring every so often.
Step 6: Divide evenly between baked tart shells (at this point you can cover and chill until ready to serve)
Step 7: Before serving top eqach tart with dollup of whipped cream or Cool Whip.