French onion dip
2 tablespoons unsalted butter
1 tablespoon extra-virgin olive oil
1 large yellow onion, chopped
1/2 cup sour cream
1/2 cup mayonnaise
2 teaspoons fresh lemon juice
Coarse salt and freshly ground pepper
In a large skillet, melt butter and olive oil over medium-high heat. Add onions and cook 3 minutes. Reduce heat to low and cook, stirring occasionally, until onions are very soft and golden, 25 to 30 minutes. Remove from heat and cool; set aside.
In a small bowl, combine sour cream, mayonnaise and lemon juice. Add onions and mix well. Season with salt and pepper. Serve with kettle-style chips.