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Easy Zucchini Orzo Casserole Recipe

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  • Author: Lisa
  • Prep Time: 20 minutes
  • Cook Time: 15 minutes
  • Total Time: 35 minutes
  • Yield: 8 people 1x
  • Category: Main-course
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

This Easy Zucchini Orzo Casserole is a flavorful, creamy, one-pan vegetarian main-course or satisfying side-dish. It combines tender orzo pasta, fresh zucchini, and melty cheese with aromatic thyme for a comforting and simple weeknight meal. With minimal prep and hands-off baking, it’s a perfect choice for busy families or potlucks.


Ingredients

Units Scale

Produce

  • 1 cup chopped onion
  • 4 cups cubed zucchini
  • 2 teaspoons minced fresh thyme

Pantry & Oils

  • 2 tablespoons olive oil
  • 1 1/2 cups dried orzo

Dairy

  • 1 cup half-and-half
  • 1/2 cup grated cheddar cheese (divided)
  • 1/2 cup grated fontina or Havarti cheese (divided)

Broth & Seasonings

  • 3 cups vegetable or chicken broth
  • Kosher salt and freshly ground pepper, to taste

Instructions

  1. Preheat and Prepare Dish – Preheat your oven to 375°F (190°C) and lightly spray a 9 x 13-inch baking dish with nonstick cooking spray to prevent sticking.
  2. Sauté Onions and Orzo – In a very large skillet, heat the olive oil over medium-high heat. Add chopped onions and sauté for about 2 minutes until they become tender. Add the dried orzo and stir for another minute, ensuring the orzo is well coated with oil and onions.
  3. Add Liquids and Simmer – Pour in the vegetable or chicken broth and bring the mixture to a simmer, scraping up any browned bits from the bottom of the pan. Stir in the half-and-half and return to a simmer. Cover the skillet, lower the heat, and cook gently for about 8 minutes, stirring occasionally, until the orzo is almost tender and has absorbed most of the liquid but is still slightly loose.
  4. Add Zucchini, Thyme, and Cheese – Stir in the cubed zucchini and minced thyme. Gradually add half of each cheese, sprinkling in batches and stirring after each addition until the cheese has melted into the mixture.
  5. Transfer to Baking Dish – Pour the mixture into the prepared baking pan, spreading evenly. Sprinkle the remaining 1/4 cup of cheddar and 1/4 cup of fontina or Havarti over the top of the casserole.
  6. Bake – Bake in the preheated oven for 15 minutes, until the cheese on top is melted and bubbly.
  7. Serve – Serve the casserole hot or warm and enjoy the creamy texture and rich flavors.

Notes

  • Substitute fontina or Havarti with mozzarella for a milder flavor.
  • For a gluten-free version, use gluten-free orzo or short pasta.
  • Add a pinch of red pepper flakes for a touch of heat.
  • Use either vegetable broth for a vegetarian version or chicken broth for more flavor.
  • Make ahead: Assemble, refrigerate, and bake just before serving.

Nutrition

  • Serving Size: 1/8 of casserole
  • Calories: 250
  • Sugar: 3g
  • Sodium: 410mg
  • Fat: 12g
  • Saturated Fat: 6g
  • Unsaturated Fat: 5g
  • Trans Fat: 0g
  • Carbohydrates: 28g
  • Fiber: 2g
  • Protein: 9g
  • Cholesterol: 25mg