Beef Strip Steaks with Grilled Onion Relish

Ingredients

• 4 steaks beef Strip Steaks, cut 1-inch thick (about 8 ounces each)
• 1/2 cup balsamic vinegar
• 4 teaspoons garlic-pepper seasoning, divided
• 2 medium red onions, each cut into 12 wedges
• 2 medium yellow squash, cut lengthwise in half
• 2 medium zucchini, cut lengthwise in half
• 2 tablespoons olive oil
• 1 teaspoon fresh oregano or thyme
• Salt