In a large (deep) skillet over medium heat, cook the ground beef until browned. Add diced onion and shredded zucchini, cook until softened, about 3–4 minutes.
Stir in Italian seasoning, garlic powder, salt, and pepper. Cook for another 2 minutes.
Pour in the marinara sauce and stir.
Break each lasagna noddle in 3 and top each piece with ricotta
Add the ricotta noodles into the sauce, pressing them down so they’re mostly covered by the sauce
You will need to move them around and continue to layer (ideally 3 layers)
Add 1/2 cup of water
Cover and let simmer on medium low heat for about 15 minutes, stirring occasionally, until the noodles are tender.
Sprinkle with mozzarella
Cover for another 2–3 minutes until the cheese is melted and bubbly.
Remove from heat and let sit for a few minutes, especially if there's excess liquid, it will get absorbed by the noodles.
Serve warm and enjoy!