Cheesy Baked Penne

Bahan-bahan (6 porsi)

• 4 cups 2% milk
• ¼ cup (½ stick) unsalted butter
• ¼ cup all purpose flour
• 1/8 teaspoon ground nutmeg ((can use freshly grated))
• freshly ground black pepper, (to taste)
• 16 ounces penne pasta, (cooked to al dente)
• 1½ cups diced ham
• 1 cup frozen peas
• 1 cup diced provolone cheese
• 1 cup freshly grated or shredded Parmesan cheese