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1
To make the tomatoes, preheat the oven to 200 degrees.
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2
Using a pastry brush, brush the skin side of the tomatoes with the olive oil.
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3
Place skin side down on a large baking sheet.
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4
Sprinkle with the salt and pepper to taste.
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5
Bake until they shrink to about a quarter of their original size, about 4 to 6 hours; they should remain soft and juicy.
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6
Let the tomatoes cool on the baking sheet.
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7
Quarter the tomatoes and set aside.
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8
To make the lasagna, bring a large pot of lightly salted water to a boil.
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9
Add the potato slices and blanch for 7 minutes.
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10
Drain and set aside.
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11
Heat the olive oil in a large pot over medium heat.
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12
Add the garlic and rosemary and cook for 30 seconds.
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13
Add the kale to the pot, stir once and cover with a lid.
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14
Cook for 12 minutes.
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15
Stir in 1 1/2 teaspoons of salt and the pepper flakes.
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16
Preheat the oven to 350 degrees.
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17
Whisk together the ricotta, egg, remaining salt and pepper to taste.
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18
Spray an 11-by-7-inch baking dish with the olive oil.
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19
Line the bottom of the dish with 3 of the noodles, trimming them to fit if necessary.
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20
Spread the noodles with half of the ricotta mixture.
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21
Spread 3 cups of the kale mixture over the ricotta.
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22
Layer half of the potatoes over the kale and scatter with 3/4 cup of the tomato pieces.
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23
Repeat the layers, ending with remaining noodles.
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24
Spread the remaining kale mixture over the noodles.
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25
Sprinkle with the ricotta salata and the remaining tomato pieces.
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26
Cover with aluminum foil.
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27
Bake for 30 minutes.
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28
Cut into 6 pieces, place on a plate and serve.