Classic Beef Lasagna

• 12 lasagna sheets
• 500 g ground beef
• 2 cups marinara sauce
• 3 cups shredded mozzarella
• 1 cup grated Parmesan
• 3 cups milk
• 50 g flour
• 50 g butter

Instructions

1. 1

   Melt the butter in a medium saucepan over medium heat. Add the flour and whisk constantly for 1-2 minutes to form a roux, being careful not to brown it.

2. 2

   Gradually pour in the milk while whisking constantly to prevent lumps. Simmer the sauce over low heat for 5-7 minutes, stirring frequently, until it thickens enough to coat the back of a spoon. Remove from heat.

3. 1

   In a large skillet or pot, cook the ground beef over medium-high heat for 6-8 minutes, breaking it up with a spoon, until fully browned and no longer pink. Drain excess fat if necessary.

4. 2

   Pour in the marinara sauce and stir to combine. Reduce heat to low and simmer for 15 minutes to allow flavors to meld.

5. 1

   Preheat oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish. Spread a thin layer of the meat sauce on the bottom of the dish.

6. 2

   Place a layer of lasagna sheets over the sauce. Top with 1/3 of the remaining meat sauce, followed by 1/3 of the béchamel sauce, and sprinkle with 1/3 of the shredded mozzarella cheese. Repeat this layering process two more times.

7. 3

   Top the final layer of mozzarella with the grated Parmesan cheese. Cover the dish with foil and bake for 25 minutes. Remove the foil and bake for another 15-20 minutes, or until the cheese is bubbly and golden brown. Let rest for 10-15 minutes before slicing.