Make-Ahead Creamy Spinach Lasagna Recipe - BettyCrocker.com

Ingredients

• 3 tablespoons butter
• 1/4 cup Gold Medal™ all-purpose flour
• 2 cups Progresso™ vegetable broth (from 32-oz carton)
• 1 1/2 cups heavy whipping cream
• 1 1/4 teaspoons salt
• 1/8 teaspoon ground nutmeg
• 1 tablespoon olive oil
• 2 packages (8 oz each) sliced mushrooms
• 3 cloves garlic, finely chopped
• 2 bags (5 oz each) baby spinach
• 1 container (15 oz) whole-milk ricotta cheese
• 3 cups shredded mozzarella cheese (12 oz)
• 3/4 cup grated Parmesan cheese (3 oz)
• 1 egg
• 1/4 teaspoon pepper
• 12 oven-ready no-boil lasagna noodles