Roasted Brussels Sprouts with Apple and Ham

Ingredients

• 12 ounces fresh Brussels sprouts or 1 package (10- to 12-oz.) frozen Brussels sprouts
• 2 cooking apples (such as Granny Smith, Idared, Northern Spy, Rome Beauty, Stayman, Jonagold, Pink Lady, Golden Delicious, Melrose or Mutsu)
• 1/2 large red onion, peeled and thinly sliced
• 2 tablespoons vegetable oil
• 1 (1/2-inch thick) boneless ham steak, cut into 3/4-inch pieces (about 8 oz.)
• 3 tablespoons honey mustard
• 1/4 teaspoon pepper