Turn pressure cooker on, press “Sauté”, and wait 2 minutes for the pot to heat up. Add the butter, onion, and mushrooms, and cook until softened, about 6 to 8 minutes, stirring occasionally. Stir in the garlic and cook 1 minute more, stirring constantly.
Add the cream cheese, chicken stock, heavy cream, Worcestershire sauce, soy sauce, lemon juice, and black pepper. Stir the sauce until the cream cheese is melted in, about 2 minutes. Press “Cancel” to stop sautéing.
Add the green beans to the pot and stir to coat. Turn the pot on Manual, High Pressure for 1 minute and then do a quick release.
Stir together all ingredients for the topping in a small bowl.
Pour the green bean mixture into a 2-quart casserole dish, sprinkle the topping evenly on top, and cover with foil. (This recipe can be made ahead up until this point, and kept in the fridge for up to 3 days before baking.)
Preheat the oven to 425F and bake until warm and bubbling throughout, about 20 to 25 minutes.
Remove the foil and broil a couple minutes to brown the top. Serve.