Preheat the oven to 375°F (190°C).
Heat a large skillet over medium heat. Add a drizzle of olive oil and the ground beef. Cook, breaking up the beef with a spatula, until browned and no longer pink.
Add the tomato sauce to the skillet with the beef. Season with salt and pepper to taste. Simmer for 10-15 minutes, stirring occasionally.
In a large bowl, combine the ricotta cheese, Parmesan cheese, mozzarella cheese, cheddar cheese, blue cheese, and egg. Mix well.
Cook the lasagna noodles according to the package directions. Drain and rinse with cold water.
Spread a thin layer of the meat sauce on the bottom of a 9x13-inch baking dish
Arrange a layer of lasagna noodles on top of the sauce, overlapping slightly. Spread a layer of the cheese mixture over the noodles.
Repeat with another layer of sauce, noodles, and cheese mixture, until all the ingredients are used up. The top layer should be the cheese mixture.
Cover the baking dish with aluminum foil and bake for 25 minutes.
Remove the foil and bake for an additional 10-15 minutes, or until the cheese is golden brown and bubbly.
Let the lasagna cool for a few minutes before slicing and serving. Garnish with fresh basil, if desired.