Prepare grill for direct cooking over medium-high heat (475–525°F).
Preheat 10–15 minutes with lid closed and grill basket inside.
Brush grill grates clean.
Brush ribeyes with olive oil and season both sides liberally with Weber Savory Steakhouse Seasoning.
Combine mushrooms and onion in a bowl. Coat with olive oil and season with Weber Sav’ry SPG Seasoning.
Grill ribeyes on left side for 4 minutes
Add mushrooms and onions to grill pan on right side and cook 3 minutes.
Flip steaks to a new spot, if possible, stir vegetables, close lid and cook 4 minutes more. For medium, source recipe calls for a 125°F pull temperature.
Remove steaks, top with mushrooms and onions, and rest 5 minutes.
Serve warm with mashed potatoes.
Recipe Tips
Preheat the grill basket with the grill. Move steaks to a fresh section when flipping, if possible. Rest steaks for 5 minutes before serving.
