Creating the Farmstand Vegetable Frittata with Herbs is a simple process that can be broken down into easy steps. Follow these instructions to achieve delicious results:

1. Preheat the Oven: Start by preheating your oven to 375°F (190°C).
2. Prepare the Veggies: In a bowl, combine the diced bell peppers, chopped spinach, diced zucchini, finely chopped onion, and halved cherry tomatoes.
3. Whisk Eggs: In another large bowl, whisk together the eggs, milk, salt, and black pepper until well combined and frothy.
4. Add Herbs and Cheese: Gently fold in the chopped herbs and shredded cheese into the egg mixture.
5. Sauté Vegetables: In an oven-safe skillet, heat olive oil (or butter) over medium heat. Add the mixed vegetables and cook for about 5-7 minutes until they are just tender.
6. Combine and Pour: Pour the egg mixture evenly over the sautéed vegetables in the skillet. Allow it to cook undisturbed for about 2-3 minutes until the edges start to set.
7. Bake the Frittata: Transfer the skillet to the preheated oven and bake for about 15-20 minutes, or until the frittata is set in the center and lightly golden.
8. Check for Doneness: A toothpick inserted into the middle should come out clean. If not, give it a few more minutes.
9. Cool Slightly: Remove from the oven and let it cool for a few minutes before slicing.
10. Serve: Cut into wedges and serve warm, chilled, or at room temperature.

This straightforward method will guide you in creating a mouthwatering frittata that your guests will love.