Pork Loin Stuffed with Spinach

INGREDIENTS

• 1/2 (10 ounce) package frozen chopped spinach, thawed and drained
• 3 tablespoons margarine
• 1/2 cup diced onion
• 1 clove garlic
• 1/3 cup dry bread crumbs
• 3 pounds pork tenderloin
• 2 tablespoons ketchup
• 1/4 cup orange juice
• 2 tablespoons teriyaki sauce
• 1/2 teaspoon ground cumin