Add drained and rinsed black beans and drained corn into a bowl with the crumbled feta cheese.
Chop the bell pepper, green onions and cilantro & add to the bowl.
Wisk the apple cider vinegar, olive oil and sugar until all the sugar crystals melt. Pour over the bowl and mix well.
Refrigerate for an hour and enjoy!
You can use white vinegar as a substitute for apple cider vinegar. However, you may need to add more sugar since the white vinegar isn't as sweet as the apple cider vinegar. After you make the vinaigrette, taste test to check!
If the bean dip has been sitting out for a while, give it a good stir to get the vinaigrette mixed in well before serving.
If you don't like cilantro, parsley is another option.