French onion bread recipe

Ingredients

• 400 g strong white flour
• 100 g rye flour
• 7 g active dried yeast
• 340 ml water (approx)
• 1 large white onion, sliced as thinly as possible
• 1 tbsp vegetable oil
• 1 clove of garlic
• 1 tsp chopped fresh thyme
• 1/2 pint vegetable stock
• 2 tbsp dijon mustard
• 1 beaten egg
• 100 g Swiss style cheese (eg gruyère), grated