Rarebit toasties with sticky Marmite onions recipe | Good Food

Ingredients

• 2 tbsp plain flour
• 2 tbsp butter
• 250ml milk
• 50ml ale or stout
• 80g extra mature cheddar
• 1½ tsp English mustard
• 1 tsp Worcestershire sauce plus extra to serve
• pinch cayenne pepper
• 1 tbsp vegetable or rapeseed oil plus extra for the eggs if using
• 2 onions halved and thinly sliced
• 1 tbsp light brown soft sugar
• 1 tbsp Marmite
• 4 chunky slices sourdough bread
• 2 eggs (optional)