Step 1: The first and most crucial step for perfect zucchini patties is to deal with the moisture. Grab your grated zucchini and place it in a cheesecloth or a clean kitchen towel. Now, squeeze, squeeze, squeeze! You want to wring out as much liquid as humanly possible. Seriously, don't be shy – this is key to crispy patties, not soggy ones!
Step 2: In a medium mixing bowl, toss your well-squeezed, dried zucchini. Add in the egg, that lovely Parmesan cheese, cornstarch, and your salt and pepper.
Step 3: With a fork, mix everything together thoroughly. Keep going until all the ingredients are well combined and you see it starting to form a sort of "dough" or cohesive mixture. It should hold together when you press it.
Step 4: Time for the sizzle! Heat your garlic butter in a non-stick skillet over medium heat. You want it warm enough to melt and gently bubble, but not so hot that it burns.
Step 5: Now, scoop half of your zucchini mixture into the hot skillet. Using the back of your spoon or a spatula, gently press and shape it into a round or square patty, roughly the size of a slice of bread. Repeat this for your second patty.
Step 6: Let these beauties cook! Give each patty 3 to 4 minutes per side. You're looking for that gorgeous golden brown color and a lovely crisp texture. Be patient, it's worth it!
Step 7: Once your patties are beautifully browned, it's cheese time! Sprinkle a generous amount of your shredded cheddar cheese on top of one zucchini patty. Then, carefully (and I mean carefully!) slide the second crispy zucchini patty on top to form your sandwich.
Step 8: Continue cooking for just another 3 minutes or so, or until that cheese is wonderfully melted and gooey. You can even gently press down on the top patty with your spatula to encourage the melting process.
Step 9: Carefully remove your magnificent zucchini grilled cheese from the pan. Let it cool for just 1 minute – this helps the cheese set a little and prevents scalding your mouth! Then, slice it up and serve immediately. Enjoy your masterpiece!