Easy Three Bean Casserole

A smoky, sweet-and-tangy bean bake at approximately 190 calories per serving. Three kinds of beans, one dish, almost no effort.

This is the bean casserole that turns up at every good cookout, rebuilt so it earns its place on a weeknight too. Pinto, kidney, and baked beans go into one dish with softened onion and red pepper, then a quick sauce of ketchup, cider vinegar, brown sugar, and dry mustard pulls it all together into something smoky and tangy. It bakes to a bubbling finish at around 190 calories and 3 WW Classic Points per serving, with a genuinely useful 9g of fiber.

Recipe Info

Serves: 6  |  Prep Time: 10 minutes  |  Cook Time: 35 minutes  |  Calories per serving: ~190

Nutrition per Serving (Estimated)

Protein: 8g  |  Fat: 1.5g  |  Carbohydrates: 35g  |  Fiber: 9g

WW Classic Points: Approximately 3 points per serving, matching the original recipe. Note: the original version of this post carried garbled ingredient text and incomplete nutrition data, so the recipe has been rewritten from scratch and the figures recalculated from the ingredients listed below. This estimate is based on the legacy WW points system and is provided as a general reference only.

Ingredients

• 1 teaspoon olive oil
• 1 onion, peeled and diced
• 1 red pepper, deseeded and diced
• 2 garlic cloves, peeled and finely chopped
• 1/2 teaspoon chilli powder
• 1 teaspoon dry mustard powder
• 60ml / 4 tablespoons no-added-salt tomato ketchup
• 2 tablespoons light brown sugar
• 2 teaspoons cider vinegar
• 1 x 400g / 14oz can pinto beans, drained and rinsed
• 1 x 400g / 14oz can red kidney beans, drained and rinsed
• 1 x 400g / 14oz can vegetarian baked beans in tomato sauce, undrained
• 200g / 7oz green beans, trimmed and cut into short lengths (optional)

Instructions

1. Preheat the oven. Preheat to 180C (350F / Gas Mark 4).
2. Soften the vegetables. Heat the olive oil in a non-stick frying pan over medium heat. Add the onion and red pepper and cook for 6 to 8 minutes, until softened and just beginning to color.
3. Bloom the spices. Add the garlic, chilli powder, and dry mustard. Stir for 1 minute, until fragrant.
4. Make the sauce. Stir in the ketchup, brown sugar, and cider vinegar. Let it bubble for a minute so the sugar dissolves and the vinegar loses its raw edge.
5. Combine the beans. Tip the pinto beans, kidney beans, baked beans, and green beans if using into a large ovenproof dish. Pour over the onion and sauce mixture and stir until everything is evenly coated.
6. Bake. Cover and bake for 25 minutes, then uncover and bake for a further 10 minutes, until the top is glossy and the edges are bubbling.
7. Rest before serving. Let the casserole stand for 5 minutes. It thickens noticeably as it settles.

Serving Suggestions

• Serve alongside grilled chicken, pork tenderloin, or turkey sausages
• Spoon over a baked potato for a filling vegetarian main
• Pair with a crisp green salad and a sharp vinaigrette
• Bring to a barbecue or potluck, where it holds its heat well
• Serve with a spoonful of Greek yogurt and chopped spring onion on top

Tips and Variations

• Rinsing the canned beans well removes a surprising amount of sodium
• Swap the chilli powder for smoked paprika if you want the smoky note without the heat
• Butter beans or cannellini beans work in place of the pinto beans
• A few drops of liquid smoke or a chopped chipotle in adobo deepens the flavor considerably
• The casserole can be assembled a day ahead and baked straight from the refrigerator, adding about 10 minutes to the covered baking time

Why This Recipe Works

Beans are one of the most satisfying things you can build a dish around, because the fiber and protein together keep you full long after the plate is cleared. Using three varieties gives the casserole real textural interest, and softening the onion and pepper properly before they go in the oven means the sauce tastes cooked through rather than raw. Just two tablespoons of brown sugar and a splash of cider vinegar deliver the sweet-and-tangy character this dish is known for, with almost all the flavor coming from the spices and the vinegar rather than from added fat.

Storage and Reheating

Store cooled leftovers in an airtight container in the refrigerator for up to 4 days. Reheat in a covered dish in a moderate oven for 15 to 20 minutes, or in the microwave, adding a splash of water if it has thickened too much. This casserole also freezes well for up to 3 months.

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Disclaimer: Nutritional information is estimated and may vary based on specific ingredients, brands, and portion sizes used. This recipe is for informational purposes only and is not a substitute for professional dietary or medical advice. Always consult a healthcare provider or registered dietitian for guidance tailored to your individual needs.

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