Ingredients:

• 1 1/2 pounds tuna, swordfish or sturgeon steaks
• 1 red bell pepper
• 1 green bell pepper
• 1 small onion (sweet if available)
• 6 to 10 large button mushrooms
• 2 lemons, cut into wedges
• Marinade Ingredients
• 1/2 cup extra virgin olive oil
• 2 tablespoons onion, chopped
• 1 tablespoon fresh rosemary, chopped
• 1 teaspoon salt
• 1/2 teaspoon black pepper
• 2 cloves garlic