Lasagne Bolognese with Spinach recipes

Name: Lasagne Bolognese with Spinach recipes
Ingredients: 1/4 cup olive oil; 3 ounces sliced pancetta, finely chopped; 1 medium onion, finely chopped; 1 large carrot, finely chopped; 1 celery rib, finely chopped; 2 garlic cloves, chopped; 2 pounds ground beef chuck (not lean); 1 1/2 cups dry white wine; 1 1/2 cups whole milk; 1/4 cup tomato paste; 1 1/2 teaspoon thyme leaves; 2 (10-ounce) packages frozen chopped spinach,thawed; 2 (15-ounce) containers whole-milk ricotta; 4 large eggs, lightly beaten; 1/2 cup grated Parmigiano-Reggiano; 1/2 teaspoon grated nutmeg; 3/4 cup whole milk, divided; 12 Barilla no-boil dried lasagne noodles (from 1 box)