Beef Mince and Potato Bake

From http://www.menupages.ie/Recipes/easy_food_cookbook/RecipeDetail.aspx?recipeId=547

Ingredients:

• 250g beef mince
• 3 large potatoes, peeled
• 1 onion, chopped
• 1/2 tbsp tomato puree
• 3 medium tomatoes, chopped
• 60 ml beef stock
• 1/2 cup grated cheese
• 1/2 tbsp oil

Preparation:

1. Boil potatoes with salt until tender. Drain and cool. 
2. Preheat oven at 180 degrees C.
3. Heat oil in a pan and fry onion until soft. Add mince and fry until browned. Add puree, chopped tomatoes and beef stock and bring to a boil. Simmer for 10 - 15 minutes. Season with salt and pepper.
4. Cut the potatoes into thin slices. Spoon a layer of mince into an ovenproof dish. Arrange a layer of potatoes on top and cover with a layer of mince. Repeat and end with a layer of potato.
5. Sprinkle grated cheese on top and bake for 30 minutes until golden brown.