Start by washing and chopping your vegetables. Ensure all pieces are roughly the same size for even cooking. Trust me—this small act can save you from bites that are either undercooked or mushy.

Next, choose a large sauté pan and heat your olive oil over medium-high heat. You want the oil shimmering, which usually takes about a minute. If it starts to smoke, turn down the heat.

Once the oil is ready, toss in the chopped red onion and minced garlic. Sauté for about two minutes or until the onion turns translucent. The aroma? Delectable.

Now it’s time to add the hardest vegetables first—carrots and broccoli. Stir them in and let them cook for about 4–5 minutes, stirring occasionally. This way, they maintain a nice crunch while absorbing that garlicky goodness.

Add the bell peppers and yellow squash, giving everything a good stir. Allow them to sauté for another 3–4 minutes, showcasing their colors. You want a slight char but not to overcook them.

Once the vegetables are tender but still crisp, sprinkle in thyme leaves, salt, and pepper. Finally, drizzle on the lemon juice and give everything a last toss. Remove from heat before serving.

To take the dish from good to spectacular, sprinkle some fresh parsley and grated Parmesan on top. Voilà! Your sautéed veggies are ready to impress.