This is a Standard dip recipe which as many variations,

Ingredients:
- 1 medium onion, chopped (see variations)
- 2 tbsp butter
- 1 tbsp olive oil
- 1/4 tsp cayenne pepper
- 1 tsp salt
- 1/2 tsp ground black pepper
- 100 gr cream cheese, room temperature
- 1/2 cup sour cream, greek yoghurt or mayonnaise
- 100 gr grated cheddar or any other hard cheese
Turn oven to 180 degrees celsius.
Cut the onions in half, and chop them finely.
Heat the butter and oil in a large saute pan on medium heat. Add the onions, cayenne, salt and pepper and saute for 10 minutes.
Reduce heat to medium-low and cook, stirring occasionally, for 20 more minutes, until the onions are browned and caramelized. Allow the onions to cool.
Place the cream cheese and sour cream in a bowl and beat until smooth. Add the onions and mix well.
Bake for 30 minutes. serve warm or cold with crackers
Variations:
Make your own dip changing the caramelized onion for salmon, chopped artichokes and garlic, bacon and onion.... cooked aubergine and garlic.