Preheat your oven to 350°F / 175°C.
Line a large baking sheet with parchment paper and lightly grease with cooking spray.
To make the noodles, combine the softened cream cheese, 2 cups (480 ml) of mozzarella, and ½ cup of Parmesan in a microwave-safe bowl. Microwave in 30-second intervals, stirring in between, until fully melted and smooth.
Whisk in the eggs, salt, and pepper until well combined.
Pour the cheese mixture onto the prepared baking sheet and spread it into a thin, even rectangle.
Bake for 15-20 minutes, or until the center is set and the edges are golden brown.
Let it cool slightly.
While the noodles bake, prepare the sauce.
Heat the olive oil in a large skillet over medium heat.
Add the chopped onion and cook for 5 minutes until softened.
Stir in the minced garlic and cook for another minute until fragrant.
Add the ground beef to the skillet.
Cook, breaking it up with a spoon, until browned and no longer pink.
Drain off any excess grease.
Stir in the tomato paste, marinara sauce, and oregano.
Season with salt and pepper to taste and let it simmer for 5 minutes.
In a separate bowl, mix the ricotta cheese with the remaining ½ cup of Parmesan cheese.
Season with a pinch of salt and pepper.
Once the noodle sheet has cooled slightly, cut it in half widthwise, then cut each half into three equal pieces to create 6 'noodles'.
To assemble, spread a thin layer of meat sauce on the bottom of an 8x8 inch baking dish.
Place two noodle pieces on top.
Spread half of the ricotta mixture over the noodles, followed by one-third of the remaining meat sauce and ½ cup of mozzarella.
Repeat the layers once more.
Top with the final two noodle pieces, the last of the meat sauce, and the remaining 1 cup (240 ml) of mozzarella.
Bake for 25-30 minutes, or until the sauce is bubbly and the cheese on top is melted and golden.
Let the lasagna rest for 10 minutes before garnishing with fresh parsley, slicing, and serving.
Don't be afraid to add other low-carb vegetables to your sauce, like finely chopped mushrooms or zucchini, for extra flavor and nutrients.
