In a large bowl, gently mix all of the meatloaf ingredients together.
2 pounds lean ground beef, ½ cup Panko breadcrumbs, ½ onion, 4 cloves garlic, 2 tablespoons chopped fresh parsley, 2 large eggs, 2 tablespoons Worcestershire sauce, 1 teaspoon kosher salt, ½ teaspoon ground black pepper, ½ teaspoon dried ground sage
Transfer the meatloaf mixture to a large piece of heavy-duty aluminum foil. Form the meatloaf into a 5x8-inch log.
Fold up the sides of the foil to make a secure basket for the meatloaf. Fold the sides of the foil high enough so the juices don’t spill out while cooking.
In a medium bowl, whisk the glaze ingredients together. Brush half of the glaze over the meatloaf.
½ cup ketchup, 2 tablespoons brown sugar, 2 tablespoons balsamic vinegar, 2 teaspoons Dijon mustard
Pour 1 cup of water into the bottom of the Instant Pot. Place the wire rack into the pot and gently lower the meatloaf in the foil onto the rack.
Attach the Instant Pot lid and ensure the valve is in the “sealing position.” Set the Instant Pot to Pressure Cook – Manual for 25 minutes and cook.
Once the Instant Pot has finished, allow the pressure to naturally release for 10 minutes.
Remove the lid and use the rack to carefully lift the meatloaf out of the Instant Pot and transfer to a serving platter.
Top with remaining glaze and serve.