Vegetable Tian - VeryVera

Ingredients

• Olive oil
• 1 large Vidalia onion, diced
• 3-4 zucchini
• 3-4 yellow squash
• 5-6 Campari medium tomatoes
• 1 tsp. kosher salt
• 1/2 tsp. freshly ground black pepper
• 2 tbsp. chopped fresh basil leaves, plus extra sprigs