Step 1

Preheat the oven to 180c / 350f and line a muffin tin with 12 muffin cases.

Step 2

Gently whisk the eggs in a large bowl and stir in the milk and melted butter. Mix in the grated cheese, spring onion, baby spinach and diced pepper.

Step 3

Finally, add in the flour, salt and pepper (if using) and crumble in the stock cube and mix just enough until all the ingredients have combined.

Step 4

Divide the mixture between the 12 muffin cases and bake in the oven for 20-25 minutes until cooked through (a skewer stuck into the middle should come out dry).

Step 5

These muffins can be frozen once they have cooled completely. To defrost simply leave out for a few hours or overnight.