Place potatoes in the bottom of the pot in an even layer. Add the bay leaf and chicken broth. Place the steam rack on top of the potatoes.
In a large bowl thoroughly combine the Meatloaf Mixture ingredients.
Gently press the meatloaf into a 6-cup bundt pan and cover loosely with foil--do not seal.
Use a foil sling to lower the bundt pan on to the steam rack, then secure the lid, making sure the vent is closed.
Using the display panel select the MANUAL or PRESSURE COOK function*. Use the +/- keys and program the Instant Pot for 22 minutes.
When the time is up, quick-release the remaining pressure. Remove the bundt pan and brush the top with 1/4 cup bbq sauce, then set under broiler for 5-7 minutes until sauce is bubbly and caramelized.
Meanwhile, remove bay leaf and add half-and-half, butter, garlic powder and salt and pepper to the pot. Mash to your desired texture.
Slice the meatloaf, top with additional crumbled bacon. Serve with the potatoes.