• Trim the fat off your top sirloin steaks, and cut them into 2 inch pieces. Don’t cut them smaller, as this helps to insure even cooking.
• Cut potatoes into 1 inch size pieces, which will mean quartering or halving them, depending on the size.
• Place potatoes in a microwave safe bowl, and cover with water. Microwave for 4-5 minutes, to help the potatoes start cooking and get tender. Drain off water, and set aside.
• In a large bowl combine all ingredients, except the garnish, and toss to combine.
• Cut and lay out 4 12x12 inch pieces of foil.
• Divide steak and potatoes between the 4 12x12 inch sheets of foil, then top each with 1 tablespoon butter.
• Wrap the foil tightly around the contents to form your foil packs. Fold edges to create a seal.

Grill

• Preheat your grill to high heat. Approximately 450 degrees F.
• Place foil packs directly on grill grates. Cook for 10 minutes.
• Flip foil packets over, and grill an additional 10 minutes. Or until potatoes are cooked through and steak has reached your desired doneness
• For char, or grill marks, open packet, and finish steak pieces directly on grill for 3-4 minutes.
• Garnish with fresh thyme or parsley, and serve.

Bake

• Preheat oven to 425 degrees F
• Place foil packets on a baking sheet, or directly on the rack, and bake for 20-25 minutes until cooked through to desired doneness.
• Open foil packets, and swithc oven over to broil. Broil on high for 2-3 minutes to caramelize the steak pieces.
• Garnish with fresh thyme or parsley and serve.