White Lasagna Preparation time: 30 minutes Cooking time: 1 hour 20 minutes Serves: 10 1 onion, very finely diced 200g unsalted butter 8 cloves garlic, minced salt and pepper 1kg chopped frozen spinach, thawed ¼ cup plain flour 1¼L hot milk 400g mozzarella, grated 250g gruyere, grated 1kg ricotta 100g Pecorino, finely grated 1 tsp…
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