Italian Eggs Benedict with Pesto Hollandaise

Directions

1. In a small saucepan, melt butter; stir in pesto. In top of a double boiler or a metal bowl over simmering water, whisk egg yolks, water and lemon juice until blended; cook until mixture is just thick enough to coat a metal spoon and temperature reaches 160°, whisking constantly. Reduce heat to very low. Very slowly drizzle in warm melted butter mixture, whisking constantly.
2. Transfer to a small bowl if necessary. Place bowl in a larger bowl of warm water. Keep warm, stirring occasionally, until ready to serve. Place 2-3 in. of water in a large saucepan or skillet with high sides; add vinegar. Bring to a boil; adjust heat to maintain a gentle simmer. Break cold eggs, 1 at a time, into a small bowl; holding the bowl close to the surface of the water, slip each egg into water.
3. Cook, uncovered, 3-5 minutes or until whites are completely set and yolks begin to thicken but are not hard. Using a slotted spoon, lift eggs out of water.
4. To serve, layer prosciutto, basil, tomato and eggs over toast. Top with hollandaise sauce. Serve immediately.