Potato And Spinach Gratin

• 4 lb potatoes, peeled
• 4 lb spinach, cleaned
• 3 None onions, peeled and finely diced
• 2 cloves garlic, peeled, finely chopped
• 6 tbsp butter or margarine
• 1/2 cup all purpose flour
• 2 cup vegetable stock
• 2 cups + 5 tbsp skim milk
• 1 1/2 cup Gouda, grated
• 3/4 cup Parmesan, grated
• 2 None egg yolks
• 1/3 cup pine nuts

1. Preheat oven to 400u0b0F. Place potatoes in a large pot of water. Bring to a boil and cook for 20 mins.
2. While potatoes are cooking, melt 2 tbsp butter in a saucepan and saute two-thirds of the onions and garlic. Add spinach in batches, cover and cook until wilted. Season and cook for 2 mins. Drain potatoes, leave to cool, and slice.
3. To make the sauce, melt 4 tbsp butter and cook remaining onions and garlic until soft. Sprinkle over the flour and cook briefly. Pour in stock and 2 cups milk. Bring to a boil while stirring, then simmer for 5 mins. Add half of the cheeses and stir until melted. Whisk egg yolks with 5 tbsp milk and stir into sauce.
4. Grease a large baking dish and spread a thin layer of sauce on the bottom. Cover sauce with one third of sliced potatoes, then half the spinach. Repeat, ending with a topping of sauce. Sprinkle with the rest of the cheese and the pine nuts and bake for 45 mins until golden brown.

potatoes, spinach, onions, garlic, butter, flour, vegetable stock, gouda, parmesan, egg yolks, pine nuts

Taken from recipes-plus.com/api/v2.0/recipes/16368 (may not work)