Ideal bread to use is Pain de Campagne for the crunchiness after you’ve grilled it. Mouthwatering cheeses to use are blocks of Swiss and Gruyere that you will slice to your desired thickness, but I prefer thin so they melt faster.

Slice however many button mushrooms you want and one regular yellow onion, and then saute them with whipped Cabot butter, or regular unsalted butter, in medium heat. Set aside. Continue reading →