Creamy Spring Pasta Bake

PASTA

• 1/2 cup (4 oz.) salted butter
• 1/2 cup (2 oz.) all-purpose flour
• 2 teaspoons dry mustard
• 1 teaspoon table salt
• 1/2 teaspoon black pepper
• 1/4 teaspoon cayenne pepper
• 2 cups half-and-half
• 2 cups whole milk
• 1 (16-oz.) block Swiss cheese, shredded
• 2 ounces Parmesan cheese, shredded (about 2/3 cup)
• 1 (16-oz.) pkg. farfalle (bow-tie pasta), prepared according to pkg. directions
• 1 (12-oz.) pkg. cubed boneless ham (about 2 cups)
• 1 1/2 cups frozen baby sweet peas, thawed