1/2tspcrushed red pepper flakes [more or less to taste]
1medium red bell pepperdiced
1large sweet onionthinly sliced
Steam green beans per the package directions and cool. Place the remaining canned beans in a colander and rinse under cold water.
In a large mixing bowl, whisk together vinegar, olive oil, sugar, salt, garlic powder, onion powder, celery seed and red pepper flakes until the sugar has dissolved. Add beans, diced red bell pepper and onion to the bowl. Gently toss until combined.
Store chilled in a shallow airtight container. Stir occasionally for 1-2 days before serving. May be made up to one week in advance.