In a large skillet, add the beef, onions, garlic, and oregano, and cook together until the beef is browned.
Add soup, sauce, and vinegar. Simmer for 30 minutes, stirring occasionally.
Cook lasagna noodles until just tender, they will soften more in the oven.
In a 9 x 13 baking dish, add a thin layer of the meat sauce to the bottom of the pan. This will prevent sticking.
Layer 3 lasagna noodles, then meat sauce, then cottagecheese, then mozzarella. You should have enough ingredients to make 4 layers of noodles, sauce, and cheese.
Bake for 30 minutes, and let it stand for 15 minutes after baking.