Garlic Butter Steak and Potato Foil Packets

Name: Garlic Butter Steak and Potato Foil Packets
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Cuisine: American
Ingredients: 1 ½ pounds steak (sirloin is my favorite cut here); 1 pound baby potatoes (cut into 1/2 inch pieces (halving or quartering usually does it for me)); 1 onion (peeled, halved and then thinly sliced); 1 tablespoon olive oil; 2 tablespoons chopped fresh parsley; 1 tablespoon minced garlic (or more to taste); 1 tablespoon Italian seasoning; salt and pepper (to taste); 2 tablespoons butter (cubed)