Craft Your Crust: In a food processor, combine the almond flour and softened butter. Pulse until the mixture forms wet, crumbly bits. Gently press this simple crust into the bottom of an 8x8 inch baking dish lined with parchment paper, making sure it’s even.
Bloom the Gelatin: Sprinkle the gelatin over the cold water in a small bowl. Let it rest for 5 minutes to "bloom." Then, stir in the hot water until the gelatin is completely dissolved and clear. If you spot any tiny undissolved lumps, strain them out for a silky smooth filling.
Whip Up the Filling: Add the softened cream cheese to your food processor and blend until it's perfectly smooth. Now, add the dissolved gelatin, 4 ounces of heavy cream, 1/3 cup of low-carb sweetener, and 1 teaspoon of fresh lime or lemon zest. Pulse again until the mixture is beautifully smooth and creamy, pausing to scrape down the sides as needed.
Assemble and Chill: Spoon dollops of the creamy cheesecake filling over the prepared crust, ensuring the entire crust is covered before you gently spread it smooth. This technique helps prevent the crust from lifting. Transfer the dish to the refrigerator for at least 3 to 4 hours, or until the cheesecake is perfectly set.
Add the Finishing Touch: For the topping, whip the remaining 3/4 cup of heavy cream with 2 tablespoons of powdered low-carb sweetener until it's light and fluffy. Carefully spread this luscious whipped topping over your chilled, set cheesecake. For an extra pop of flavor and color, sprinkle with a little more fresh lime zest if you like.
Slice and Serve: Gently lift the cheesecake out of the dish using the parchment paper and place it on a clean cutting board. Slice into 16 delightful, healthy bars. Store any leftovers in the refrigerator or even the freezer – they're wonderfully refreshing when frozen!