Roast sprouts in 400 oven cut in half, drizzled with olive oil and seasoned with salt and pepper for 30-40 minutes. Toss around half way through. Cool. Skewer sprouts and prosciutto. Finish with a little balsamic vinegar. These are good at room temp.
I roasted these with shallots and garlic at 450 for 20 minutes. Drizzled in olive oil and seasoned with sea salt and pepper. Last 5 minuted added chopped walnuts. Finished with white wine vinegar.