1 cup Olive Oil
1/4 cup Lemon Juice
1/3 cup Soy Sauce
1 tbsp Garlic Powder
1-1/2 tsp Celery Seed
1-1/2 tsp Black Pepper, more if desired
4 Beef top sirloin steaks (about 4 ounces each)
1/4 cup Butter
20 oz small new potatoes, parboiled & drained
1/3 cup chopped onion
4 cup Assorted torn mixed greens
cherry tomato halves or pimento strips, for garnish