Put the sausages in a roasting tin and place in the preheated oven. Cook for 10 minutes then turn the sausages and cook for a further 5 minutes
or until they have a good colour on the outside.
Add the sliced onions to the tin. Mix the dried herbs
mustard and stock together and pour over the sausages and onions. Return the tin to the oven for a further 20 minutes
or until the sausages are cooked through and the onion gravy thickened. Season to taste with salt and pepper.
For the mash
boil the potatoes in a pan of boiling water until tender. Drain and mash.
Heat the butter and milk until the butter has melted. Add a pinch of salt and pepper then pour over the mashed potato and mix until smooth. Set aside until ready to serve.
Cook the peas in a saucepan of boiling water for 2–3 minutes
or steam them for 1–2 minutes. Drain thoroughly and set aside.
For the sausages and onion gravy
mix the softened butter and plain flour together to form a paste. Remove the sausages from the baking tray
set aside and cover to keep warm. Place the baking tray onto the hob
add the flour and butter mixture and whisk until combined. Stir over a medium-high heat for 2–3 minutes
or until the gravy has thickened slightly. Add the sausages back to the tray and warm through for 1–2 minutes.
