This delicious combination of sweet and spice flavors is a perfect five-ingredient recipe for an appetizer buffet and one that people actually expect Crockpot little sausages will be a hit at your next party. Make sure that you choose little smokies or little vienna sausages. Those are the tiny, fat sausages that are pre-cooked but taste best when heated. You can make this crockpot appetizer spicy or mild, depending on your tastes. Choose a spicy chili sauce and add some crushed red pepper flakes for a spicy version. Or, if you like it mild, don't add the red pepper and choose a milder sauce. We would add some chopped green or red bell peppers to the slow cooker along with the onion mixture for more color and flavor, but that would be more than five ingredientsServe this recipe with a big spoon and some little forks or toothpicks so people can eat them easily. They will be gobbled up in no time.