Instant Pot Frozen Turkey Breast

Ingredients

• 2 tablespoons butter
• 1 onion (, cut into quarters)
• 1 apple (, cut into chunks)
• 3 stalks celery (, chopped)
• 2 cups chicken broth
• 1 package turkey gravy mix (0.87 ounce)
• 2 teaspoons kosher salt
• 2 teaspoons dried thyme
• 2 teaspoons dried rosemary
• 1 teaspoon ground black pepper
• 1 teaspoon dried sage
• ½ teaspoon garlic powder
• 1 frozen boneless turkey breast (3 pounds (, such as Butterball®))
• 1 cup water
• ½ cup quick-mixing flour (such as Wondra®)