INGREDIENTS
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3 large onions, halved and thinly sliced
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3 tablespoons olive oil
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1 teaspoon dried oregano
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10 ounces smoked back bacon, chopped
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2 (14 ounce) cans chopped tomatoes, in rich juice
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20 basil leaves, roughly torn, plus extra to serve if you like
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9 ounces fresh egg lasagna noodles (check pack for cooking instructions)
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2 1/2 cups milk
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2 ounces butter
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2 ounces all-purpose flour
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1 pinch fresh nutmeg
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2 ounces parmesan cheese, grated