Mexican Bean & Rice Casserole

A layered vegetarian casserole that stacks spiced kidney bean puree, brown rice with parsley, fresh sliced tomatoes, and raw garlic into a deeply satisfying one-dish meal. No cheese, no meat, and it still fills you up like it means it.

The beans get pureed with tomato paste, cumin, chili powder, basil, oregano, and shoyu (or tamari) into a thick, spiced paste. This isn’t a chunky bean layer. It’s smooth and spreadable, which means it melds with the rice above and below during the 45-minute bake. Sauteed onion, celery, and red pepper get folded in for texture.

The optional arame (a mild Japanese seaweed) adds minerals and a subtle ocean flavor that works surprisingly well with the Mexican spice profile. It’s completely optional, but if you’re already eating plant-based, it’s a nice nutritional boost.

Five cloves of pressed raw garlic distributed between the tomato layers sounds aggressive, but it mellows significantly in the oven. By the time the casserole is done, the garlic has roasted into something sweet and soft.

Kitchen Tips

• Use cooked brown rice, not raw. Raw rice won’t cook through in this casserole. Leftover rice works great here.
• Blend the bean puree until very smooth. Chunky puree doesn’t spread evenly between layers and creates dry spots.
• Press the garlic rather than mincing it. Pressed garlic distributes in a thin layer across the tomatoes and cooks more evenly.
• This reheats beautifully. The flavors actually deepen overnight in the fridge.

Variations

• Top with shredded cheddar or vegan cheese in the last 10 minutes for a melty layer.
• Use black beans or pinto beans instead of kidney beans.
• Add a layer of roasted corn between the rice and beans for extra sweetness and color.