BANGERS 'N MASH CASSEROLE

Steps:

• To prepare potatoes:.
• Cook the potatoes in water until tender, about 20 minutes.
• Once tender, thoroughly drain the water.
• Add sour cream, butter and prepared mustard; mash until smooth and creamy.
• While potatoes are cooking:.
• Prepare the sausages by pricking them several times with a kitchen fork.
• In sauce pan, bring the beer (or water) to a simmer over medium heat.
• Add the sausages and poach for 5 minutes.
• Removes sausages from pan and discard beer/water.
• Heat oil and mustard seed in large skillet over medium heat.
• Add the onions, sausage, salt and pepper.
• Cook until onions are tender and sausages are light golden brown, about 5-6 minutes (stirring often to avoid scorching the onions).
• Remove sausages, slice into thirds and place in a casserole.
• Add flour to pan, stirring until well combined.
• Stir in sugar, balsamic vinegar and thyme; cook for 2 minutes.
• Pour in beef broth; bring to the boil and cook for 5 to 10 minutes until gravy thickens.
• Pour onion gravy over sausages; top casserole with mashed potatoes and sprinkle french fried onions on the top.
• Just before serving, bake uncovered at 350 degrees fahrenheit for about 25 minutes until top is golden brown.