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1
To make Sauce: Heat oil in saucepan over medium heat.
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2
Add onion, and saute 7 minutes or until soft.
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3
Add garlic, sage, and oregano; stir until combined.
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4
Add tomatoes and vinegar, and season with salt and pepper, if desired.
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5
Cover, reduce heat to medium-low, and simmer 10 minutes.
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6
Puree with immersion blender.
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7
To make Cannelloni: Heat oil in skillet over medium heat.
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8
Add onion; saute 10 minutes.
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9
Add zucchini and corn; increase heat to medium high.
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10
Saute 3-5 minutes, or until beginning to brown.
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11
Stir in garlic and sage; remove from heat.
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12
Stir in ricotta, 2 Tb Parmesan, and nutmeg.
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13
Bring a large pot of salted water to a boil.
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14
Add noodles, and cook 3 minutes or until noodles bend without breaking.
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15
Drain, and cool in large bowl of cold water.
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16
Drain again, pat dry, and stack on cutting board.
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17
Halve noodles width-wise.
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18
Preheat oven to 350F Spoon 1/2 cup Sauce into 9-inch square baking dish.
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19
Spoon 3 Tb zucchini mixture down center of 1 halved noodle.
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20
Roll into a tube, and place seam side down in dish.
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21
Repeat with remaining noodles and filling.
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22
Sprinkle with remaining 2 Tb Parmesan and mozzarella, if using.
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23
Bake 25 minutes, or until cheese melts and Sauce is bubbly.
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24
Store/Serve: Cool, and cover tightly with foil.
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25
Refrigerate 3 days or freeze up to 1 month.
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26
Thaw, and reheat, covered, in 350F oven 20-25 minutes, or until hot in center.