Combine all ingredients except for the shrimp in a 1 quart glass casserole. Set microwave oven to high for 5 minutes, and then power level low & defrost for 16 minutes. Stir occasionally during cooking. The sauce should be hot and thickened.
Stir in shrimp, cover, and microwave on high for 2 1/2 to 3 1/2 minutes, or until shrimp are curled, stirring once. Let stand, covered 2 minutes. To serve, skewer with picks or pass with cocktail picks or toothpicks.