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1
Preheat oven to 400 degrees F.
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2
Boil manicotti in salted water for 8 minutes.
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3
Drain, reserving 1/2 cup of pasta water and set pasta aside.
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4
In a large skillet, heat oil over medium heat.
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5
Saute onion until translucent, about 3 minutes.
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6
Add garlic and saute 1 minute more.
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7
Remove pan from heat and mix in chicken, tomatoes, cilantro and sour cream.
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8
Set aside.
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9
Place tomatillos, onion, jalapeno and garlic in a baking dish.
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10
Toss with oil and season with salt and pepper.
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11
Roast until tomatillos turn golden around the edges and are soft, about 45 minutes.
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12
Remove from oven and blend ingredients together until smooth.
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13
Use reserved pasta water to thin sauce, if necessary.
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14
Season with salt and pepper, to taste.
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15
To make the cheese sauce: In a medium saucepan, melt butter over medium-high heat.
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16
Add flour and cook 2 minutes.
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17
Whisk in heavy cream and bring to a simmer.
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18
Add cheese and nutmeg and stir until melted.
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19
Season sauce with salt, to taste.
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20
To assemble: Reduce oven temperature to 350 degrees F. Stuff manicotti tubes with chicken mixture and assemble in a 9 by 12-inch baking dish.
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21
Pour cheese sauce over the top.
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22
Bake 30 minutes until cheese is bubbling.
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23
Drizzle tomatillo sauce on Maniladas before serving.