Start by preparing the zucchinis. Cut both ends off the zucchinis, then slice them into half-inch thick rounds. If your zucchinis are larger, you can cut them in half or fourths lengthwise before slicing.
Next, heat a non-stick frying pan over medium heat. Add in about 2 tablespoons of olive oil—this will give your zucchinis a nice, golden-brown color as they cook.
Once the oil is hot, toss in the minced garlic. Sauté for about one minute, stirring constantly, until the garlic becomes fragrant but not burnt.
Now, add the sliced zucchini to the pan. Stir well to coat the pieces with the oil and garlic. Cover the pan with a lid and let it cook for 4 to 5 minutes. Stir them a couple of times to ensure even cooking.
After 4 to 5 minutes, check the zucchini. It should be tender but still slightly crisp, and there might be some liquid in the pan. If it seems too watery, uncover the pan and let it cook for an additional 1 to 2 minutes until the liquid evaporates.
Season the zucchini with sea salt and add the chopped flat parsley. Stir gently to incorporate the parsley, allowing it to wilt slightly from the heat.
Now it’s time to add the Parmesan cheese. Stir it in and let it cook for about one minute until it melts and melds into the zucchini.
Finally, sprinkle the mozzarella cheese over the top. Cover the pan once more and turn off the heat. Let it sit for 1 to 2 minutes, allowing the cheese to melt beautifully.
Once the cheese is melted, uncover the pan and serve the Cheesy Zucchini Stir Fry hot. Enjoy this flavorful dish!