Pomme de Terre Tear Gratin

-1 serving -
Ingredients
3/4 cup and 1/4 cup thin sliced Salt & Vinegar potato chips, divided
(this recipe is optimal for using the smaller chip fragments left over from previous snacking bouts.  If using chips from a freshly open bag, break the chips up into smaller pieces, short of crushing them.)
(Dividing the chips, leads to more texture variation.  If you want a creamier mixture, use all chips at once.  For more variation, divide further.)
1/3 cup sour cream
2 tablespoons mayonnaise
1/4 cup grated white cheddar
Instructions
Mix the first portion of potato chips, sour cream, and mayonnaise in a microwave safe 1-portion serving bowl.
Microwave on High for 1 minute.
Stir. 
Add the second portion of potato chips. Mix in.
Microwave on High for 30 seconds.
Stir.
Add the grated white cheddar cheese to the top.  Microwave on HIgh for 30 seconds to melt the cheese.
Notes:
The Salt & Vinegar chips have inherent seasoning. Can substitute plain chips. Would want to add salt to taste, pepper?, a teaspoon vinegar.
Can use your preferred level of fat in the mayonnaise and sour cream.
Can use a reduced-fat cheese: the Dubliner Reduced-fat White Cheddar used seemed to strike the right cheddar note, but mild. Can substitute another and/or higher fat cheese.
Can transfer the potato/sauce mixture to an oven safe serving dish and run under the boiler to melt the cheese.
Alternate Ideas:
-Mainstream: use plain potato chips and American cheese melted on top
-Buffalo Wing: substitute buffalo-flavored potato chips, add a few dashes celery salt to the sour cream, substitute blue cheese dip for the mayonnaise, melt blue cheese on top 
-Novelty Chips: use your favorite wacky potato chip flavor, or the chips you tried out on your friends/family which were a No-Go, and match it with a compatible cheese (Dill Pickle with American, Jalapeno and Monterey Jack, Bloody Mary and Horseradish Cheddar)
-French: use plain potato chips, add a teaspoon tarragon or white wine vinegar to the mixture, salt, melt gruyere cheese on top. 
-60's: substitute ruffled chips, substitute onion dip for the sour cream and mayonnaise, sprinkle with french-fried onions
-'Healthier': a thicker-cut 'natural' potato chip: add 30 seconds to the cooking times. The thicker cut chips also better simulates a traditional potatoes gratin