Easy Fish Pie

Ingredients

• 1 kg Yukon Gold potato
• 30 gm Butter, unsalted
• 2 tbsp Partly skimmed milk, lactose free, 2% M.F.
• 25 gm All-purpose white flour
• 4 green onion (stem) Green onion
• 400 ml Partly skimmed milk, lactose free, 2% M.F.
• 100 gm Atlantic Cod
• 100 gm Atlantic salmon, wild
• 100 gm Haddock
• 1 tsp Dijon mustard
• 25 gm Chives
• 1 cup Sweet corn, canned, drained
• 1 cup Frozen green peas
• 1 cup, shredded Cheddar cheese