1–2 lbs beef steak (sirloin, round, or chuck)
2 large onions, thinly sliced
3 tablespoons olive oil or melted butter
1–1½ teaspoons salt and black pepper
Instructions
Step 1: Prepare Oven and Foil
Heat the oven to 400°F. Tear off four large sheets of heavy-duty foil, making sure each piece is large enough to loosely wrap the steak and onions while sealing in moisture.
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