Chop the Veggies: Dice the zucchini, yellow squash, red bell pepper, and red onion. Dice the apples last to help keep them from browning. Add all the chopped veggies to a large bowl.
4 cups diced zucchini, 2 cups diced yellow squash, 1 cup diced red bell pepper, 1 cup diced red onion, 2 cups diced Honeycrisp apples
Make the Dressing: In a small bowl or mason jar, add the olive oil, red wine vinegar, sugar, dried basil, salt, and black pepper. Stir or shake until fully combined.
⅓ cup olive oil, 2 tablespoons red wine vinegar, 1 teaspoon white sugar, 1 teaspoon dried basil, ¾ teaspoon salt, ¼ teaspoon ground black pepper
Dress the Salad: Pour the dressing over the chopped veggies. Mix everything together until evenly coated.
Add Optional Cheese: If you're using feta or goat cheese, stir it in now for an extra flavor boost.
½ cup crumbled feta or goat cheese
Chill to Marinate: Cover the bowl and refrigerate for at least 12 hours so the flavors can develop.
Serve and Store: Before serving, give the salad a good stir to redistribute the dressing. Store any leftovers in an airtight container in the fridge for up to 5 days.
2 cups diced Honeycrisp apples