Homemade Creamy White Sauce Lasagna

Ingredients (17)

• FOR THE LASAGNA:
• 1 1/2 -2 cups frozen peas
• 3 Italian sausages
• 2 tablespoons olive oil
• 1 1/2 cups chopped mushrooms
• 1/4-1/2 teaspoon oregano
• 1/4 teaspoon parsley dried or fresh (if fresh use about 1 tablespoon finely chopped)
• 1/4 teaspoon salt
• 1/4 cup water
• 1 - 1 1/2 large fresh mozzarella chopped
• 1 1/4 cups freshly grated parmesan cheese
• 16 lasagna noodles (more if necessary)
• FOR THE WHITE SAUCE:
• 3 1/2 cups milk (I used 2%)
• 1/4 cup butter
• 1/4 cup all purpose flour
• 1/4 teaspoon salt