Cut the onions in half, and slice them into thin half rounds.

Heat the Earth Balance and oil in a large saute pan on medium heat. Add the onions, cayenne, salt and pepper and saute for 10 minutes.

Reduce the heat and cook for another 20 minutes or so. Stir occasionaly, until the onions are brown and caramelized. Remove from heat and allow to cool.

Place the cream cheese, sour cream, and mayo in a food processor. Combine until smooth.

Stir in the onions and taste for seasonings.