High-Protein Lasagna

Meat sauce

• 1 tbsp olive oil1 tbsp olive oil
• 1 large yellow onion, finely chopped1 large yellow onion, finely chopped
• 2 lb 93% lean ground beef905 g 93% lean ground beef
• 1½ tsp kosher salt, plus more for the pasta water1½ tsp kosher salt, plus more for the pasta water
• ½ tsp black pepper½ tsp black pepper
• 5 cloves garlic, minced5 cloves garlic, minced
• 2 tbsp tomato paste32 g tomato paste
• 1 tbsp Italian seasoning1 tbsp Italian seasoning
• ½ tsp crushed red pepper flakes½ tsp crushed red pepper flakes
• 1 can crushed tomatoes, 28 oz1 can crushed tomatoes, 28 oz
• 1 can tomato sauce, 8 oz1 can tomato sauce, 8 oz

Cheese layer

• 24 oz 2% cottage cheese, one 24-oz tub680 g 2% cottage cheese, one 24-oz tub
• 1 large egg1 large egg
• 2 oz Parmesan, finely grated, about 1 cup, divided57 g Parmesan, finely grated, about 1 cup, divided
• ¼ cup fresh basil, chopped, plus leaves to serve6 g fresh basil, chopped, plus leaves to serve

Assembly

• 12 sheets lasagna noodles, regular, not no-boil12 sheets lasagna noodles, regular, not no-boil
• 2 cups shredded part-skim mozzarella225 g shredded part-skim mozzarella