Lasagne Rolls Recipe | Food Network UK

Ingredients

• For the sauce
• 2 tbsps unsalted butter
• 4 tsps plain flour
• 1¼ cups whole milk
• ¼ tsp salt
• 1/8 tsp ground black pepper
• Pinch ground nutmeg
• For the lasagne
• 1 (425g) container whole milk ricotta cheese
• 1 (285g) package frozen chopped spinach, thawed, squeezed dry
• 1 cup plus 2 tbsps grated Parmesan
• 85g thinly sliced prosciutto, chopped
• 1 large egg, beaten to blend
• ¾ tsp salt, plus more for salting water
• ½ tsp freshly ground black pepper
• 1 to 2 tbsps olive oil
• 12 uncooked lasagne noodles
• 2 cups marinara sauce
• 1 cup shredded mozzarella (about 115g)