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Cheese and Mashed Potato Pie with fried onion rings on top served in a black and white casserole dish with a red,white,blue and black cloth and wood shavings in the background
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5 from 56 votes

Cheese and Mashed Potato Pie

A super side dish for all the family to enjoy.
Inspired by British school dinners this cheese and mashed potato pie is the answer all kids want to hear when they ask 'What's for dinner tonight?'
Potatoes mashed with cheese, oven-baked in a casserole dish topped with more cheese, and your choice of onion, tomatoes, or breadcrumbs.
Perfect served with sausages, chicken, and vegetables, or as part of a roast dinner.
Try adding chopped bacon and onion in with the mash to serve as a cheap easy main meal.
Prep Time10 minutes
Active Time35 minutes
Total Time45 minutes
Course: Dinner, Side Dish
Cuisine: British
Keyword: cheese and onion mash, cheese and potato bake, cheesy potato bake, childrens, kids, mashed potatoes, school dinners, side
Yield: 6 People as a side
Calories: 360kcal
Author: Luke and Kay - Flawless Food

Equipment

Ingredients

  • 1200 grams Potatoes (6 medium/large potatoes) suitable for mashing (maris piper are our favourite)
  • 120 ml Milk (½ cup) any varity (we use semi-skimmed)
  • 1 teaspoon English Mustard
  • 250 gram Cheese (2 cups) medium - mature cheddar is best for flavour.
  • 1 Onion
  • 1 tablespoon oil or butter ½ for frying onion + ½ for greasing dish
  • Salt & Pepper

Optional extras or alternatives

  • 6 slices Smoked Bacon chopped & fried to add into mash
  • 2 large Tomatoes sliced for topping instead of onion
  • 3 tablespoon Breadcrumbs to sprinkle on top for extra crunch

Instructions

  • Preheat oven to 220°C/ 200°C fan / Gas mark 7 / 425°F.
    Chop the potatoes into even-sized chunks. Place in a large saucepan. Add just enough water to just cover them. Add salt to the water.
    Chopped potatoes in water in a silver cooking pot with salt being sprinkled on top
  • Bring to the boil on high heat, then turn the heat down to a gentle boil for about 20 minutes.
    Boiling chopped potatoes in a silver cooking pot
  • Meanwhile, add sliced onion rings into a pan with oil or butter. Fry on medium-low heat.
    Frying sliced onion rings on a cast iron pan
  • Cook until soft and golden.
    Frying sliced onion rings on a cast iron pan
  • When the potato is soft enough for mashing, drain and leave to air dry, clean out the pan. Add milk and mustard into the pan and warm up whilst stirring on low heat.
    Milk and mustard warming up in a silver cooking pot
  • Add potatoes to the milk and start mashing with a masher.
    Cooked boiled potatoes added to the milk and mustard in a silver pot
  • Add ½ of the grated cheese (125g/1cup) and continue to mash over low heat
    Grated cheddar cheese being poured over the mashed potato in a silver pot
  • Mash until cheese has melted and the mash is lump-free.
    Optional- if you want to add bacon or onions into the mash you can stir it in now
    Mashing the potato with a silver masher in a silver pot
  • Prepare the casserole dish by spreading butter or oil all over the bottom and sides with a kitchen tissue.
    Lining a black and white casserole dish with butter with kitchen paper by hand
  • Pile the mashed potato into the casserole dish. Flatten down with the back of a spoon.
    Pouring the cheesy mashed potato into a black and white casserole dish
  • Sprinkle with remaining cheese.
    Sprinkling grated cheese over the mashed potato in a casserole dish by hand
  • Top with fried onion rings.
    Alternatively, top with tomatoes or breadcrumbs.
    Placing fried onion rings on top of the cheesy mashed potato
  • Bake on the top shelf of a preheated oven (220°C/ 200°C fan / Gas mark 7 / 425°F) for about 15 minutes.
    Placing the Cheese and Mashed Potato Pie in the oven
  • Remove when the cheese has melted and turned golden ready to serve.
    Cheese and Mashed Potato Pie with fried onion rings on top served in a black and white casserole dish with a red,white,blue and black cloth and wood shavings in the background

Video

Nutrition

Calories: 360kcal | Carbohydrates: 38g | Protein: 15g | Fat: 17g | Saturated Fat: 9g | Trans Fat: 1g | Cholesterol: 45mg | Sodium: 290mg | Potassium: 939mg | Fiber: 5g | Sugar: 4g | Vitamin A: 443IU | Vitamin C: 41mg | Calcium: 353mg | Iron: 2mg