Begin by adding chicken broth, minced garlic, and tender artichoke hearts.
Next, layer in the vibrant spinach, creamy mayonnaise, tangy sour cream, aromatic onion powder, and luxurious cream cheese into the pressure cooker.
Set your Instant Pot to manual mode on high pressure and allow the ingredients to meld together for a brief 4-minute cook time.
Once done, perform a quick release to unlock the tantalizing aromas and perfectly cooked mixture.
Elevate the indulgence by generously sprinkling in Parmesan and Mozzarella cheese, stirring until they melt seamlessly into the creamy concoction.
Transfer this irresistibly creamy blend to a serving bowl, ready to be enjoyed by all fortunate enough to partake.