Crispy Zucchini Casserole
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Crispy Zucchini Casserole

Layered zucchini and yellow squash with pesto and marinara under a crispy Parmesan-panko top — somewhere between a side and a very light lasagna.

DifficultyEasyTotal time40 minServes4
01

Overview

Prep15 min
Cook25 min
Total40 min
Servings4
DifficultyEasy
02

Ingredients

03

Equipment

  • 9x12-inch baking dish
  • Kitchen towel
  • Large bowl
04

Method

01
Preheat and oil the dish

Preheat and oil the dish

Preheat the oven to 375°F and oil a 9x12-inch baking dish.

02
Dry the squash

Dry the squash

Spread the sliced squash on a kitchen towel to remove excess moisture.

03
Toss with pesto

Toss with pesto

Toss the zucchini, squash, and onion with pesto.

04

Spread the marinara

Spread the marinara over the bottom of the baking dish.

05
Layer the vegetables

Layer the vegetables

Arrange the zucchini mixture evenly over the sauce.

06
Add the topping

Add the topping

Sprinkle with panko and Parmesan.

07

Finish the top

Drizzle lightly with olive oil and add red pepper flakes.

08

Bake

Bake for about 25 minutes, until the zucchini is tender but not mushy.

09

Optional broil

Broil briefly at the end if you'd like a darker, crispier topping.

10
Cool before slicing

Cool before slicing

Let cool for about 20 minutes before slicing.

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Tips

NoteDrying the zucchini is probably the least glamorous and most useful part of this recipe.
NoteAlso, smaller zucchini are better here. They're firmer and less watery than the giant ones that sometimes hide in the garden.
✦

Nutrition

AllergensGluten, Dairy, Tree Nuts depending on pesto
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Storage

RefrigeratorUp to 3 days, covered; reheat in a 350°F oven so the topping crisps back up.
?

Frequently asked

Can I make it vegan?+

Yes — use vegan pesto and marinara and swap the Parmesan for nutritional yeast or a vegan grating cheese.

Can I prep it ahead?+

Assemble up to a day ahead and refrigerate; add the topping just before baking so it stays crisp.

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