[ { "@type": "HowToStep", "text": "Preheat a large skillet on medium-low heat. Add butter, then sliced onions. Reduce heat to low and cook slowly until onions are soft and caramelized. This process should take around 20 minutes or so." }, { "@type": "HowToStep", "text": "Drain and rinse the white beans. Combine the beans in a food processor with the caramelized onions, parsley, salt, and red pepper flakes. Briefly, pulse several times until the beans are just pureed." }, { "@type": "HowToStep", "text": "Add the white wine vinegar and olive oil and continue to pulse until smooth." }, { "@type": "HowToStep", "text": "Taste and adjust seasoning with additional salt if needed. Transfer to serving bowl with a spatula." } ]