Here are two that I love:
One from Alton Brown:
Onion Dip from Scratch
Ingredients
2 tablespoons olive oil
1 1/2 cups diced onions
1/4 teaspoon kosher salt
1 1/2 cups sour cream
3/4 cup mayonnaise
1/4 teaspoon garlic powder
1/4 teaspoon ground white pepper
1/2 teaspoon kosher salt
Directions
In a saute pan over medium heat add oil, heat and add onions and salt. Cook the onions until they are caramelized, about 20 minutes. Remove from heat and set aside to cool. Mix the rest of the ingredients, and then add the cooled onions. Refrigerate and stir again before serving.
One from the Barefoor Contessa:
1 medium eggplant
2 red bell peppers, seeded
1 red onion, peeled
2 garlic cloves, minced
3 tablespoons good olive oil
1 1/2 teaspoons kosher salt
1/2 teaspoon freshly ground black pepper
1 tablespoon tomato paste
Directions
Preheat the oven to 400 degrees F.
Cut the eggplant, bell pepper, and onion into 1-inch cubes. Toss them in a large bowl with the garlic, olive oil, salt, and pepper. Spread them on a baking sheet. Roast for 45 minutes, until the vegetables are lightly browned and soft, tossing once during cooking.
Cool slightly.
Place the vegetables in a food processor fitted with a steel blade, add the tomato paste, and pulse 3 or 4 times to blend. Taste for salt and pepper.