In a large microwave-safe bowl, combine potato flakes, onion powder, salt, and 2 1/3 cups of water. Stir until completely moistened. Cover the bowl and microwave for 4 minutes, or until hot.
Once cool enough to handle, add sour cream and stir until blended and smooth. Re-cover the bowl to keep it hot and set it aside.
Prepare burger patties on the stove in a skillet sprayed with nonstick spray or on a microwave-safe plate in the microwave. (Refer to the package instructions for the exact temperature and cook time.) Once cool enough to handle, chop well. Set aside.
Scoop about 1/3 cup of potatoes into each of 4 parfait glasses. Evenly distribute the chopped burger patties among the glasses, followed by the cheese pieces.
Evenly distribute the remaining mashed potatoes among the glasses, followed by the tomatoes and onion. Top each with 1 teaspoon of ketchup and a pickle chip. Enjoy!
This is not meant to be an under-five-minute recipe. It's just a fun way to use the instant mashed potato flakes featured in this episode!