Caramelized Onion Bacon Feta Pastry Puffs

Puff pastry (enriched flour [wheat flour, malted barley flour, niacin, reduced iron, thiamine mononitrate, riboflavin, folic acid], water, butter, salt, ascorbic acid added as a dough conditioner), cream cheese (pasteurized cultured cream and milk, lactic acid, salt, guar gum, carob bean gum, xanthan gum), yellow onions, feta cheese (pasteurized cow's milk and skim milk, salt, enzymes, cheese cultures, rennet), whole eggs, butter, bacon (cured with water, salt, sugar, sodium phosphate, sodium erythorbate, sodium nitrite), sugar, dijon mustard (water, mustard seeds, vinegar, salt, citric acid).