Grana Padano eggs

1. Heat 4 T olive oil in a large saucepan over a medium-high heat. Add the onions and cook for 10–15 minutes until nicely browned but not burnt.
2. Remove the onions from the pan, set aside in a dish and lightly sprinkle with sea salt.
3. Add 2 T olive oil to the same pan and fry the chorizo over a low heat for 3–4 minutes. Remove from the pan and set aside.
4. Add the remaining olive oil, garlic, rosemary and chilli flakes and cook over a medium heat until the garlic is golden. Be careful not to burn it.
5. Add the butter beans, tomatoes and water. Bring to a simmer over a medium heat until the sauce thickens, this should take about 25 minutes.
6. Add the onions and fried chorizo and cook over a low heat. Season to taste. If you prefer a soup to a stew, add more water. Add the lemon zest before serving.
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Photograph: Jan Ras
Production: Bianca Strydom
Food assistant: Hannah Moerdyk