Deviled Eggs With Caramelized Onions

Directions

1. 1
   Heat a medium skilllet over low heat. When hot, add the butter and oil. When the butter has melted, add the onions. Sprinkle with the sugar. Cook over low heat for 30 minutes or more, stirring occasionally, until dark and caramelized. Don't stir too much or they won't brown, but watch so they don't burn or stick to the pan. Once the onions are caramelized, remove from heat and drain on paper towels.
2. 2
   Hard-cook the eggs; once they're cool, peel them. Cut each egg in half; place the yolks in a mixing bowl, and the whites on a serving platter.
3. 3
   Prepare the filling. With a fork, mash the yolks. Add the onions and about 1/2 cup of yogurt; stir to combine. Stir in more yogurt (up to 1 cup total) until the mixture is a creamy consistency. Season lightly with salt and pepper.
4. 4
   Fill the eggs. I find the easiest way to do this is with a ziptop bag. Open the bag and fold the top over the outside. Scrape the filling into the bag, pushing the filling well into a bottom corner of the bag. Close the bag, making sure to get out as much air as you can. Cut a small hole in the bottom corner and gently squeeze the filling into each egg white. Top each appetizer with a sprinkle of chopped chives. Refrigerate until ready to serve.
5. 5
   TIPS: Everyone has their own methods of cooking and peeling eggs. I follow the steps on this site: http://whatscookingamerica.net/Eggs/BoiledEggs.htm It has all the info from the Incredible Edible Egg site, but all in one place. * Most people cut the eggs in half lengthwise. For a different presentation, cut them crosswise, then cut a tiny sliver off the bottom of each piece so it will sit without wobbling. (If a piece seems very shallow, you can hollow it out a bit more with a melon baller.) This is great if you don't have a serving platter specifically for deviled eggs. * I use a fork to make the filling because I like texture, and I want the little onion bits to show. If you prefer a perfectly smooth consistency, you can use a food processor. * If you're bringing the eggs somewhere, you can prepare the filling in advance, store it in the ziptop bag, then fill the eggs at the location. * Also, you can hard-cook the eggs ahead of time; hard-cooked eggs will keep in the fridge for several days.
6. 6
   SUBSTITUTIONS: I use nonfat plain yogurt in an effort to use less fat, and Greek style because it's thicker. You could use mayonnaise, sour cream, or a combination. * The chives add a little flavor zing, and indicate that it's an onion-flavored dish. The measurement is approximate; I just put a pinch on each egg. Instead of chives you could use sliced green onion (scallion), and if you want to get fancy you could make green onion flowers.