Trim stems and remove loose outer leaves of Brussels sprouts and rinse.

Cook halved sprouts in a pot of boiling water until outer leaves turn bright green and center becomes tender, about six minutes. Drain. Set aside small amount of broth.

Meanwhile add olive oil to large skillet over medium-high heat. Add prosciutto. Stir occasionally until crisp, about five minutes. Remove prosciutto and reduce heat.

Using same skillet add sprouts, butter, salt, pepper and broth. Stir until liquid is reduced, about six minutes. Add prosciutto. Serve hot or cold.