For an extra layer of flavor, try adding a pinch of red pepper flakes to the marinara sauce. Feel free to experiment with different types of cheese! Mozzarella, provolone, or a blend of Italian cheeses would all be delicious. If you don't have penne pasta, any short pasta shape like rigatoni, rotini, or fusilli will work well. For a vegetarian option, consider adding some ricotta cheese in between the layers. To add more protein, use Italian sausage, ground beef, or shredded chicken in between the layers.
Roasted Zucchini Casserole
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PREP TIME15 mins
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COOK TIME1 hrs 5 mins
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TOTAL TIME1 hrs 20 mins
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SERVING8 People
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VIEWS224
Transform your summer zucchini bounty into a comforting and cheesy delight! This roasted zucchini casserole features perfectly caramelized vegetables layered with al dente pasta and a rich marinara, all blanketed under a generous layer of Parmesan. A guaranteed crowd-pleaser!
Ingridients
Adjust Servings
Nutrition
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Carbohydrate31 g
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Cholesterol8 mg
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Fiber4 g
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Protein8 g
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Saturated Fat2 g
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Sodium621 mg
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Sugar8 g
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Fat10 g
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Unsaturated Fat0 g
DIRECTIONS
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01 Step
Recipe View Preheat the oven to 400 degrees F (200 degrees C). (Prep time: 5 minutes)
02 Step
Recipe View In a large bowl, toss the zucchini and onions with olive oil until evenly coated. Spread the vegetables in a single layer in a large baking dish. (Prep time: 5 minutes)
03 Step
Recipe View Roast in the preheated oven until the vegetables are tender and golden brown, about 30 minutes. Remove from the oven and season generously with salt and pepper. Reduce the oven temperature to 350 degrees F (175 degrees C). (Cook time: 30 minutes)
04 Step
Recipe View While the vegetables are roasting, bring a large pot of lightly salted water to a rolling boil. Add the penne pasta and cook according to package directions, until al dente (about 11 minutes). Drain the pasta well. (Cook time: 11 minutes)
05 Step
Recipe View Lightly grease a 9x13-inch baking dish with olive oil or cooking spray. (Prep time: 2 minutes)
06 Step
Recipe View In a saucepan, gently heat the marinara sauce over medium heat until warm. Spread a thin layer of the warmed marinara sauce evenly across the bottom of the prepared baking dish. Top with the cooked pasta, followed by the roasted zucchini and onions. Sprinkle evenly with the grated Parmesan cheese. (Prep time: 10 minutes)
07 Step
Recipe View Bake in the preheated oven until the sauce is bubbly and the cheese is melted and lightly golden brown, about 35 to 40 minutes. (Cook time: 35-40 minutes)
08 Step
Recipe View Remove from the oven and let rest for a few minutes before serving. Garnish with additional Parmesan cheese, if desired. (Rest time: 5 minutes)
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Jamey Sauer
Mar 4, 2025This recipe was so easy to follow and the casserole was absolutely delicious! My family devoured it.
Thaddeus West
Feb 28, 2024This is a great way to use up all the zucchini from my garden. Thank you for sharing!
Dusty West
Feb 11, 2024I didn't have penne pasta on hand, so I used rotini instead. It worked perfectly!
Bradly Beatty
Oct 23, 2023I added some mozzarella cheese in addition to the Parmesan, and it was amazing!