Enjoy this tasty classic today!
- Pre-heat oven to 400 degrees Fahrenheit.
- In a medium-sized pot, heat milk; at the same time, in another similar sized pot, melt the butter and whisk in the flour and cook for 1-2 minutes
- Slowly whisk the warm milk into the roux, bring to a simmer, and season with salt and pepper
- Remove from heat and stir in ¾ cup Parmigiano-Reggiano cheese
- Meanwhile, in a large nonstick skillet, cook the beef until slightly brown, add the marinara sauce and 1/2 jar of water, season with salt and black pepper and simmer until it is reduced
- Spray a 13 x 9-inch glass baking pan with cooking spray
- On the bottom of the pan, place 1/6 of the béchamel sauce and cover with 3 sheets of lasagna
- Top with 1/6 of the béchamel and 1/5 of the meat sauce and continue alternating with the lasagna sheets for 4 more layers
- The final layer should be béchamel top with sauce and the remaining 1/4 cup of Parmigiano-Reggiano cheese
- Bake for 20 minutes covered with foil. Then uncovered for 5 more minutes or until the corners are brown and bubbling