Step 1: Caramelize the Onions

1. Heat butter and olive oil in a large skillet over medium-low heat.

2. Add the thinly sliced onions, salt, and pepper, stirring to coat in the butter mixture.

3. Cook for 25-30 minutes, stirring every few minutes to prevent burning. The onions should turn a deep golden brown and develop a sweet, rich flavor.

4. Add Worcestershire sauce, garlic powder, onion powder, and sugar (if using). Stir well and cook for another 5 minutes until fully caramelized.

5. Remove from heat and let the onions cool completely before adding to the dip.

Step 2: Mix the Dip Base

1. In a large bowl, combine sour cream, mayonnaise, salt, black pepper, Worcestershire sauce, and lemon juice. Stir until smooth.

2. Fold in the cooled caramelized onions, mixing well to distribute the flavors evenly.

3. Stir in chopped fresh chives for a touch of freshness.

Step 3: Chill and Serve

1. Cover and refrigerate the dip for at least 30 minutes to allow the flavors to meld. The longer it chills, the better it tastes!

2. Garnish with additional chopped chives before serving.

3. Serve with potato chips, crackers, fresh veggies, or warm toasted bread.