Step 1: Boil the Potatoes
Preheat your oven to 180°C (160°C fan). Line two large baking trays with parchment paper. Scrub the baby potatoes clean and halve any larger ones. Add them to a pan of boiling water and cook for 10 minutes — until you can pierce them easily with a knife.
Don't skip the boil. Roasting raw potatoes directly gives you uneven results — hard centers and overcooked outsides. Boiling first guarantees a fluffy interior before the oven works on the crust.
Step 2: Smash and Season
Drain the potatoes and spread them across the two lined baking trays. Take a heatproof jar or mug and press down firmly on each potato to flatten it. You want them to spread out and crack open at the edges — those cracks are where the crispiness happens.
Drizzle generously with olive oil, scatter over the chilli flakes, and season with salt and pepper. Make sure every potato gets some coverage.
Step 3: Roast Until Golden
Roast in the oven for 25 minutes, turning the trays halfway through for even crisping. When they're ready, the potatoes will be golden brown with crunchy edges and a tender center. They should look genuinely exciting — not pale and sad.
Step 4: Make the Tahini-Miso Dressing
While the potatoes roast, add the dairy-free yoghurt, tahini, extra-virgin olive oil, white miso paste, and lime juice to a bowl. Whisk everything together until smooth. Add water one tablespoon at a time until you reach a pourable but still thick consistency.
Taste and season with salt and pepper. The dressing should be creamy, tangy, and savory all at once. If it tastes flat, add a touch more lime juice — that usually fixes it immediately.
Step 5: Prep the Salad
Drain and rinse the butterbeans. Halve the cherry tomatoes, chop the cucumber into small pieces, thinly slice the celery and spring onions, and finely chop the fresh mint. Get everything ready before the potatoes come out of the oven so you can assemble immediately while the potatoes are still hot.
Step 6: Toss and Serve
Add the hot smashed potatoes to your large mixing bowl along with the butterbeans, cherry tomatoes, cucumber, celery, pomegranate seeds, spring onion, and fresh mint. Pour the dressing over everything and toss well to coat every ingredient.
Serve in bowls, topped with a generous sprinkle of sesame seeds. Eat immediately for maximum crunch — or see the storage notes below if you're saving some for later.