Classic Lasagna Recipe

Name: Classic Lasagna Recipe
Prep time: 20 min
Cook time: 30 min
Total time: 50 min
Cuisine: Italian
Ingredients: 4 ⅕ cup Milk; 3.5 ounce All purpose flour; 3.5 ounce Butter; Pinch of nutmeg; Salt & Black pepper; 1 lb Mixed minced meat (pork-beef); 3 Tablespoons of extra virgin olive oil; 1 cup white wine; 2.5 cups of Tomato passata; 1 Celery (about 1 cup); 1 Carrot (about 1 cup); 1 Onion (about 1 cup); 1 Bay leaf; Salt & pepper to taste; 1.1lbs Bolognese sauce; 1.22 cups Bechamel sauce; 16 regular lasagna noodles (or no-boil noodles); 10.58 oz Mozzarella cheese; 3.53 oz Grated grana padano cheese; 3 1/2 tablespoons Butter