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1
For the sauce: Heat oil in heavy large saucepan over medium heat.
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2
Add onion, carrots and garlic; saute until softened, about 12 minutes.
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3
The carrots sound weird, but they really do add something.
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4
Add beef and sausage to pan; saute until cooked through, breaking up meat with back of spoon, about 5 minutes.
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5
Add pepperoni halfway through cooking of beef, about 2 to 2 1/2 minutes.
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6
Add remaining ingredients: crushed tomatoes, tomato paste, beef stock, basil, brown sugar, oregano, bay leaves, and red pepper flakes.
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7
Cover and simmer until flavors blend and sauce measures about 5 cups, stirring occasionally, about 15 minutes.
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8
Discard bay leaves.
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9
Cool properly if preparing ahead of time.
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10
For the lasagna: Preheat oven to 350 degrees F. Cook noodles in large pot of boiling salted water until almost tender, about 7 minutes.
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11
Drain; cover with cold water.
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12
(You can use no-cook noodles, I just prefer not to.
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13
There is plenty of liquid to make them work if you use no-cook noodles, just dont reduce the sauce quite as much.)
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14
Combine ricotta and 3/4 cup Parmesan cheese in medium bowl.
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15
Season to taste with salt and pepper.
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16
Mix in eggs.
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17
Drain pasta and pat dry.
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18
Spread 1/2 cup sauce over bottom of 13x9-inch glass baking dish.
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19
Place 5 noodles over sauce, overlapping to fit.
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20
Spread half of ricotta mixture evenly over noodles.
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21
Sprinkle 2 cups mozzarella cheese evenly over ricotta mixture.
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22
Spoon 1 1/2 cups sauce over cheese, spreading with spatula to cover (sauce will be thick).
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23
Repeat layering with 5 noodles, remaining ricotta mixture, 2 cups mozzarella and 1 1/2 cups sauce.
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24
Arrange remaining 5 noodles over sauce.
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25
Spread remaining sauce over noodles.
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26
Sprinkle remaining 3/4 cup mozzarella cheese and 1/4 cup Parmesan cheese evenly over lasagna.
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27
(This can be prepared up to 1 day ahead.
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28
Cover tightly with plastic wrap and refrigerate.)
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29
Cover baking dish with aluminum foil.
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30
Bake lasagna 50 minutes; uncover and bake until hot and bubbly, about 40 minutes.
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31
Let lasagna stand 15 minutes before serving.