Gratin of Red Beans (New Orleans Style)

Red beans and rice gets all the glory in New Orleans cooking, but this gratin deserves a seat at the table too.

Kidney beans simmer in a thick, spiced sauce built on the holy trinity of onions, peppers, and celery. Cumin, coriander, cayenne, and a splash of red wine give the sauce a warmth that’s distinctly Cajun without blowing your head off.

The real trick here is cooking the onions in stock instead of oil. They caramelize to a deep amber, giving you all that sweetness and color without added fat. Once the beans are folded in, a shower of breadcrumbs and grated Parmesan goes on top before the whole dish hits a hot oven.

Thirty minutes later, you’ve got a bubbling, golden-crusted gratin that’s hearty enough to anchor a meal.

Kitchen Tips

• Cook the onions until they genuinely stick to the pan. That fond is where all the flavor lives. A splash of stock loosens it right up.
• Drain and rinse the canned kidney beans well. The canning liquid is starchy and salty and will throw off the sauce.
• You can assemble this ahead of time. The recipe is designed to be prepped, refrigerated, and baked when ready. Just add a few extra minutes to the bake time if going straight from the fridge.

Variations

• Skip the cheese entirely for a very low-fat version that still has a crunchy breadcrumb top.
• Use black beans or pinto beans for a different texture while keeping the same spice profile.
• Add andouille sausage if you want a non-vegetarian version with authentic New Orleans smokiness.