Pat steaks dry with paper towels.
Spray with olive oil and sprinkle with steak rub.
Set aside while you prepare the grill fire to 350°. For this cook we are using a large Big Green Egg with pecan chunks for smoke flavor.
Add butter, onions and garlic to a skillet.
Sauté over medium heat until softened.
Add the red wine and cook for 5 minutes.
Whisk in the beef broth and cook for about 2 minutes.
Stir in the brown sugar.
Add the thyme, salt and pepper. Whisk to combine. Lower to simmer, cooking 2- 3 minutes.
Keep warm until steaks are ready to serve.
Cook the steaks with the grill closed about 5 minutes.
Turn the steaks and continue to cook until steaks reach desired doneness.
Remove steaks to a serving platter and rest 10 minutes.
Plate the steaks and spoon red wine steak sauce over the steak.