Ingredients
Method
- Slice onions into thin half moons.
- Heat oil and butter in a wide pan over medium-low heat.
- Cook onions, stirring every few minutes, until deeply golden (30–40 min).
- Deglaze pan with vinegar, stir, and let cool.
- Mix sour cream, mayo, garlic powder, Worcestershire, and seasoning in a bowl.
- Fold in cooled onions, chill for 30 minutes, then serve.
Notes
For deeper flavor, make it a day ahead and chill overnight.