Precision Slicing and Uniformity
Cut your zucchinis into rounds that are 1/4 inch thick to start. Uniformity isn’t just for looks; it makes sure that every piece of squash cooks at the same rate. If the slices are different thicknesses, the thinner ones will get mushy while the thicker ones will stay crunchy. Use a mandoline for the best results, but please wear hand protection!The Osmotic Salt Sweat
Put your slices in a big colander and cover them with a lot of coarse sea salt. The salt makes a difference in osmotic pressure, which pulls water out of the plant cells. Give this dish a rest for ten minutes. You will observe drops of water developing on the surface. This is the “sneaky water” that often destroys casseroles.The Moisture Evaporation Sear
With a paper towel, pat the zucchini slices dry. Put 1 tablespoon of butter in a large skillet and heat it over medium-high heat. Sear the zucchini in groups for 60 seconds on each side. We don’t want to totally cook them; we only want to get rid of the extra moisture on the surface and make them a little caramelized, which gives the final keto zucchini casserole a nutty flavor.Engineering the Keto Emulsion Base
Mix the heavy cream and cream cheese together in a small saucepan over medium heat. As the cream cheese melts, use a whisk to mix it together. This makes an emulsion that stays stable. Add the ground black pepper, onion powder, and garlic. You stop the lipids, which are fats and oils, from separating during the high-heat bake by thickening the sauce on the stove beforehand.The Flavor Infusion and Layering
Use the rest of the butter to grease a 9×9-inch baking dish. Put half of the grilled zucchini on top of the other half, then pour half of the cream sauce over it. Add one cup of cheddar cheese on top. Do the layer again. This “staggered layering” makes sure that each slice of zucchini is covered with fat, which keeps the texture of the vegetable safe.The Low-Carb Crunch Factor
In a small bowl, mix the crushed pork rinds with the grated parmesan and fresh thyme. Sprinkle this mixture evenly over the top. Most recipes use flour-based breadcrumbs, which are made from ground flour and can add 15g of carbs per serving. Our pork rind and parmesan “crust” adds 0g of net carbs while providing a superior crunch.The Maillard Reaction Bake
Bake at 400°F (204°C) for 15 to 20 minutes. We use a higher temperature for a shorter duration to trigger the Maillard reaction on the cheese crust without over-softening the zucchini. Once the top is bubbling and deep golden brown, remove it from the oven and let it rest for 5 minutes. This rest period allows the sauce to “set” around the zucchini.
