Candy Bar Hot Chocolate

2 egg yolks
2 ounces milk chocolate candy bar with
    fine nuts (such as Toblerone)
1 cup milk

Beat the egg yolks in a small bowl; set aside.

Coarsely chop chocolate and place in a 2-cup microwave-safe glass measuring cup with a spout. Add the milk. Place the measuring cup, uncovered, in the microwave. Whisking once or twice, cook on MEDIUM-HIGH (70 percent power) until chocolate is melted and well blended, 2 1/2 to 3 minutes. Remove the cup from microwave and slowly pour chocolate into the reserved egg yolks, whisking constantly. Return mixture to the measuring cup and cook in microwave until heated through, about 1 minute. You may need to rotate the measuring cup if your microwave doesn