Combine sweet potatoes, corn syrup, sugar, milk, allspice, cloves, pecans, raisins, and cinnamon in a 3-quart glass casserole.
Microwave butter in a 1-cup glass measure at HIGH 1/2 to 1 minute.
Pour melted butter over the sweet potato mixture.
Stir in eggs.
Microwave at HIGH 7 minutes.
Microwave at HIGH 9 to 10 minutes.
Serve warm with half-and-half.