Grilled Peppercorn-Crusted Tuna Steaks with Vegetable Medley - Kenyon

Ingredients

• cracked peppercorns 2 tbsp
• sesame seeds 2 tbsp
• sea salt 1 tbsp
• sesame oil 4 tbsp
• tuna steaks (5 to 6 oz each), preferably sushi grade 4
• red bell peppers, quartered 2
• large cremini mushrooms 12
• zucchini, sliced into 1/2-inch thick rounds 1
• small red onion, cut into 8 wedges 1
• olive oil 2 tbsp
• salt and pepper 1/2 tsp