Ingredients:
1 ½ pound steak sirloin is my favorite cut here
1 pound of baby potatoes cut into ½-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