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1
For the pasta dough: combine 2 1/2 cups flour and the salt in a food processor.
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2
Combine the whole egg, yolks, oil and 5 tablespoons water in a cup and mix with a fork to blend.
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3
With the food processor running, add the egg mixture in a steady stream and process until the dry ingredients look like coarse crumbs.
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4
Stop and mix the ingredients to clear out any dry pockets of flour.
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5
Process until the mixture forms a dough that cleans the sides of the bowl.
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6
Turn out onto a work surface and knead about 10 times.
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7
If the dough is sticky, sprinkle with some flour and knead it in.
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8
Place the dough in a zip-top plastic bag and let it rest while starting the sauce and filling.
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9
For the basil-cream sauce: melt the butter in the oil in a large skillet over medium-high heat and add the onion.
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10
Saute until softened and caramelized, about 8 minutes.
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11
Add the wine and 1 cup water and stir until boiling.
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12
Add half of the shredded basil and boil until reduced to 1 1/2 cups, about 20 minutes.
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13
Stir in the heavy cream and boil until reduced to 2 1/2 cups, about 15 minutes.
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14
Stir in the remaining shredded basil and season with salt and pepper.
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15
Set aside.
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16
For the filling: finely chop the spinach; place in a bowl.
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17
Add cheeses, egg, salt and pepper, and mix well.
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18
For the ravioli: roll out one-third of the pasta dough onto a lightly floured surface until paper-thin, or roll gradually through a pasta machine.
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19
Working with a 6-by-30-inch piece of dough, place heaping teaspoonfuls of filling on the upper half of the length of dough, making 2 rows of 10 mounds.
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20
Wet the pasta dough between the mounds with water and fold over the empty pasta half.
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21
Press from the fold to seal, trying to eliminate air pockets.
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22
Trim the pasta edges with a cutter or knife, and separate the individual raviolo.
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23
Repeat with the remaining dough and filling.
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24
Cook the ravioli in a stockpot of boiling salted water until the pasta is al dente, about 5 minutes.
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25
Drain and spread out into a large serving bowl.
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26
Reheat the sauce and pour on top.
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27
Gently toss to coat.
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28
Sprinkle with additional Parmesan and serve.