Set the oven to 180C/160C fan/gas 4. Put the spinach in a food processor and blitz until shredded (not puréed). Put in a bowl along with the grated cheese and dried thyme.

Crack the eggs into a bowl, and mix along with the yogurt. Mix in 2 tbsp milk, adding another tablespoon if needed.

Sieve the flour and baking powder over the bowl, then mix well to combine.

Butter a muffin tin, then spoon in the batter and bake for 20-25 mins. Cool.