The holy trinity in cajun cooking is the combination of onions, green bell peppers, and celery. This aromatic combination is the classic cooking base for many cajun and creole dishes.
PREP: Peel and dice onion. Wash bell pepper and celery. Remove seeds, stem, and inner membrane from bell pepper and dice. Cut stem end off celery, slice the stalk in half lengthwise, then dice.
SAUTÉ: Heat a skillet or dutch oven over medium heat and add oil or butter to warm. Add in trinity and cook while stirring for 8-10 minutes until vegetables are softening and starting to darken.
NEXT: Continue cooking your cajun dish of choice like red beans and rice, crawfish étouffée, or gumbo.
Notes
Make ahead: Chop the vegetables, then store in the refrigerator in an airtight container for 2-3 days, or the freezer in a freezer safe container with the air removed for 2-3 months. There is usually no need to defrost, just throw the frozen trinity in your pot to thaw and sauté.