Preheat Oven to 350F lightly oil a 9X13 baking dish or coat with nonstick spray.

In a large pot of boiling salted water, cook lasagna noodles according to package instructions.

Heat olive oil in a large skillet over medium high heat. Add ground beef and onion and cook until beef has browned, about 3-5 minutes.

Make sure to crumble the beef as it cooks, season with salt and pepper to taste. Drain excess fat, stir in tomatoes and italian seasoning until well combined.

in a medium bowl, combine ricotta, 1/2 cup mozzarella and egg set aside.

spread 1 cup tomato mixture onto the bottom of a 9X13 baking dish, top with 3 lasagna noodles, 1/2 of the ricotta cheese mixture and 1 cup mozzarella cheese.

Repeat with second layer, top with remaining noodles, tomato mixture and cheese.

Place into oven and bake for 35-45 minutes or until bubbling, then broil for 2-3 minutes or until top is browned in spots.

let cool for 15 min.