Grilled Vegetable Paninis

Ingredients

• 1 tomato,sliced
• ½ cup red onion, sliced
• ¼ cup balsamic vinegar
• 1 red bell pepper, sliced
• 1 green bell pepper, sliced
• 1 zucchini, sliced
• 1 teaspoon sesame oil
• 4 ounces goat cheese, crumbled
• 2 ounces pesto sauce