-Good quality all-beef hot dogs (I only use Hebrew National)
-hot dog buns
-spicy brown mustard (don't substitute, trust me!)
Preheat grill or turn oven to 500 degrees.
Cut a yellow onion in half and slice into very thin semi-circles. Place in a small saute pan, with a drizzle of olive oil and a few tablespoons of white sugar. Stir frequently with tongs until onions soften and turn very light brown. Remove from heat.
Meanwhile, grill hot dogs. Or, if you're like me and don't want the hassle of grilling, place hot dogs on a foil-covered cookie sheet and broil for a few minutes, turning every two minutes until crisp on all sides.
Warm buns and spread one side generously with mayo. Top mayo with 1-2 Tbs. brown sugar. (The sugar will melt and create a yummy sauce-- You won't even taste the mayo.) Top brown sugar with caramelized onions.
Add a grilled hot dog to the bun and drizzle with spicy brown mustard. Enjoy!