Mushrooms Sautéed on the Grill

As I was getting the pan out to sauté mushrooms to serve with steaks, our friend Richard stopped me. “Why don’t you do those on the grill?”  I handed him the knife. Richard took over making these yummy and easy mushrooms.

1/2 pound button mushrooms quartered or sliced if large

1/3 c chopped sweet onion
1 tsp McCormick Montreal steak seasoning
2 T butter cut in pieces
 
Toss first 3 ingredients together on non-stick foil.  Butter pats on top.  Fold and seal.  Double wrap in more foil.

Place on hot grill surface for about 30 minutes. Flip the packet a couple of times during the time.