Instant Pot Beef Stew with My Secret Ingredient

Ingredients

• 2 tablespoons olive oil
• 2 tablespoons all-purpose flour
• 1 teaspoon salt (divided)
• 1 teaspoon pepper (divided)
• 1 pound beef stew meat
• 1 onion (chopped)
• 3 garlic cloves (chopped)
• 3 carrots (peeled and sliced into coins)
• 3 stalks celery (sliced)
• 2 tablespoons fresh thyme
• 1 tablespoon tomato paste
• 1 tablespoon Worcestershire sauce
• 3 cups low-sodium beef stock
• ¼ cup julienned sun-dried tomatoes (drained )
• 1 pound baby potatoes (halved)
• 1 tablespoon cornstarch
• 1 ½ cups frozen peas