Step 1: Preheat your oven to 400°F (200°C). Line a large baking sheet with parchment paper for easy cleanup. This higher temperature helps the squash caramelize and prevents it from becoming soggy, a common pitfall with zucchini and yellow squash recipes.
Step 2: Prepare the squash. Cut the zucchini and yellow squash into uniform 1/2-inch thick rounds or half-moons. Consistency in size is key for even cooking. If you have very large squash, you might consider quartering them lengthwise before slicing to manage the size.
Step 3: Mince the garlic and chop the fresh herbs. Ensure your rosemary and thyme are finely chopped to distribute their potent flavors evenly throughout the dish.
Step 4: In a large bowl, combine the sliced zucchini and yellow squash. Add the minced garlic, chopped fresh rosemary, fresh thyme, dried oregano, olive oil, sea salt, and black pepper.
Step 5: Toss everything together thoroughly until all the squash pieces are evenly coated with the oil, garlic, and herbs. Make sure every piece gets some of that flavorful coating; this is where the magic happens for these simple zucchini and yellow squash recipes.
Step 6: Spread the seasoned zucchini and yellow squash in a single layer on the prepared baking sheet. Do not overcrowd the pan! If the pan is too crowded, the vegetables will steam instead of roast, leading to a watery, less flavorful result. Use two baking sheets if necessary. This is a critical step for achieving that perfect tender-crisp texture in your zucchini and yellow squash recipes.
Step 7: Roast for 15-20 minutes, or until the squash is tender-crisp and slightly caramelized at the edges. Halfway through cooking (around 10 minutes), gently toss the vegetables on the baking sheet to ensure even browning. Keep an eye on them as cooking times can vary slightly depending on your oven and the thickness of your squash.
Step 8: Remove from the oven and serve immediately. These roasted garlic herb zucchini and yellow squash are best enjoyed fresh, hot from the oven.