Add noodles and cook for 8 to 10 minutes or until al dente. In a 9×13 inch casserole or lasagna dish ladle a cup of sauce and spread it over the bottom of the dish.
Season with salt and pepper then add marinara and stir until warmed through.
How to make lasagna. Assemble the lasagna. Bring a large pot of lightly salted water to a boil. Return beef to skillet and add garlic and oregano and cook stirring for 1 minute.
Ladle a third of the remaining sauce over the noodles. To make the meat sauce heat 2 tbsp olive oil in a frying pan and cook 750g lean beef mince in two batches for about 10 mins until browned all over. Preheat oven to 375 degrees f 190 degrees c.
Step 2 finely chop 4 slices of prosciutto from a 90g pack then stir through the meat mixture. Remove from heat and drain fat. Arrange one layer of lasagna noodles lengthwise about 3 long noodles edge may overlap depending on your pan over the sauce.
Drain and set aside.