Causa rellena

Ingredients

• 454 g (1 lb)yellow potatoes
• 1 tbsplime juice
• 1/2 tspají amarillo chilli paste
• 1/2carrot
• 2 tbsppeas (frozen and defrosted or canned, or lightly cooked fresh)
• 1/2avocado
• 113 g (4 oz)canned tuna
• 1 tbspmayonnaise
• 1 tbsponion (finely diced; red onion or another variety)

Instructions

1. 1

   Cook the potatoes

   Peel and dice or slice the potatoes. Boil until just tender, about 10 minutes, checking regularly with a knife because the cooking time depends on the size of the pieces.

2. 2

   Mash and cool

   Drain the potatoes, then mash them with the lime juice and ají amarillo. Set aside to cool.

3. 3

   Cook the vegetables

   Cut the carrot into a very small dice, about the size of the peas. Boil the carrot and peas for a couple of minutes, until just cooked; drain and set aside.

4. 4

   Prepare the filling

   Slice the avocado fairly thinly. Flake the tuna and mix it with the mayonnaise and onion.

5. 5

   Layer the stacks

   Place two chef's rings on plates. Take half of the onion and divide it between the rings, then add half of the carrot and peas to each. Add the tuna mixture and arrange the avocado slices in an even layer on top.

6. 6

   Finish and serve

   Divide the remaining potato between the two stacks and flatten the tops. Carefully remove the chef's rings and serve.

What is causa rellena?

Causa rellena is a Peruvian dish built from seasoned mashed potato and a savoury filling, often shaped into a layered stack. Its name is associated with causa limeña, a well-known style of causa from Lima.

This version pairs the potato with tuna, avocado, peas and carrot. The lime and ají amarillo bring brightness and gentle chilli flavour to the mild, creamy layers.

Nutrition and macros by portion

The nutrition label shows one serving as written: 332 calories, 19g protein, 38g carbs, 13g fat.

The potatoes provide most of the carbohydrates, while the tuna contributes protein and the mayonnaise and avocado supply much of the fat. Serve with a crisp salad or extra vegetables for a more varied plate.

The potato layer

Yellow potatoes: their naturally creamy texture makes a smooth base when mashed. Cut the pieces to a similar size so they cook at roughly the same rate.

Lime and chilli: mash these into the potatoes while they are hot so the seasoning is distributed evenly. Let the mash cool before stacking to help the layers hold their shape.

Keep the vegetables tender

Carrot: cut it into a fine dice, close to the size of the peas, for an even layer that is easy to eat.

Peas: cook them with the carrot only until just tender, then drain well. Excess water can make the filling and potato layers loose.

Build tidy layers

Chef's rings: use them to keep the ingredients in a neat stack, and add each layer gently rather than pressing hard as you go.

Avocado: slice it fairly thinly and lay the pieces in an even layer. Remove the rings carefully once the potato has been flattened on top.

A creamy tuna filling

Tuna and mayonnaise: flake the tuna before mixing so it spreads easily without pulling apart the layers. The mayonnaise binds the fish and diced onion into a cohesive filling.

The method also asks you to divide half of the onion between the rings before adding the vegetables, after mixing onion into the tuna. Follow that layering instruction as written when assembling.

Serve it simply

The finished stack is substantial enough for a light meal on its own. A crisp green salad or sliced tomatoes make a fresh accompaniment without competing with the seasoned potato.

For the cleanest presentation, assemble the stacks close to serving time and lift each ring straight upwards.

Recipe notes & tips

• Check the potatoes with a knife rather than relying only on the suggested 10 minutes.
• Drain the potatoes and vegetables thoroughly so the layers stay firm.
• Let the mashed potato cool before assembling the stacks.
• Dice the carrot finely so it sits neatly with the peas.
• Use a small spoon to distribute the filling evenly inside each chef's ring.

Variations

• Fresh chilli: add a little more ají amarillo to the mash for a livelier kick.
• Red onion: use finely diced red onion for a sharper, more colourful filling.
• Extra peas: increase the peas for a sweeter, more vegetable-forward layer.
• No rings: shape the layers by hand into compact stacks on the plates.
• Lime finish: add a small squeeze of lime over the avocado just before serving.

Common mistakes to avoid

• Overcooking the potatoes: they can become waterlogged; drain them as soon as a knife slides in easily.
• Uneven potato pieces: they cook at different speeds; cut them to a similar size.
• Wet vegetables: excess cooking water loosens the stack; drain the carrot and peas well.
• Warm mash: it is harder to shape; allow the potato mixture to cool before layering.
• Rough ring removal: the layers may shift; lift the chef's rings carefully and vertically.

How to store

Store covered in the fridge and eat within 1 day, as the assembled dish contains avocado and tuna. It is best served cold; reheating can soften the avocado and disturb the layers.

Frequently asked questions