Peel and slice the onions at least 1/8 inch thick. Heat a large skillet over medium low heat. Add the butter and the oil. Add the onions and sauté until caramelized. 30 - 40 minutes. Stirring often. Be careful not to let them burn. That flavor will transfer to the flavor.
Once the onions are golden in color, move the onions to one side of the skillet and add the vinegar to deglaze the pan. Scrap and stir to combine the flavor from the skillet. Stir the onions into the vinegar. Set aside, let cool and then cut them into smaller pieces.
In a large bowl combine the softened goat cheese with the pumpkin, onions, salt and pepper and pecans. Using the back of a fork, blend well.
Transfer to your favorite appetizer serving bowl and surround by the crackers.
Add a light drizzle of honey. (optional)