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French Onion Squash Casserole Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.2 from 65 reviews
  • Author: admin
  • Prep Time: 10 minutes
  • Cook Time: 25 minutes baking + 5 minutes final baking = 30 minutes
  • Total Time: 40 minutes
  • Yield: 6 servings
  • Category: Casserole
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

A creamy and savory casserole combining tender yellow squash and onions with French onion dip, cream of mushroom soup, and cheddar cheese, topped with crispy French fried onions for a delightful texture and flavor contrast. Perfect as a comforting side dish or vegetarian main.


Ingredients

Scale

Main Ingredients

  • 1 Tbsp olive oil
  • 3 lb yellow squash, sliced
  • 1 onion, chopped
  • 1 (10.5-oz) can Unsalted Cream of Mushroom Soup
  • 1 cup refrigerated sour cream based French Onion Dip
  • ½ tsp garlic powder
  • Salt and pepper to taste
  • 1½ cups shredded cheddar cheese
  • 1 (6-oz) container French fried onions


Instructions

  1. Preheat Oven: Preheat your oven to 350ºF (175ºC). Lightly spray a 9×9-inch baking dish with cooking spray to prevent sticking.
  2. Cook Vegetables: Heat olive oil in a large skillet over medium heat. Add the chopped onion and sliced yellow squash. Cook until the vegetables become tender, stirring occasionally. Drain any excess liquid from the vegetable mixture using a colander to avoid a watery casserole.
  3. Mix Ingredients: In a large bowl, combine the cooked squash and onion mixture with the cream of mushroom soup, French onion dip, garlic powder, 1 cup of shredded cheddar cheese, and half of the French fried onions. Season well with salt and black pepper to taste. Stir until well blended.
  4. Assemble Casserole: Spread the squash mixture evenly into the prepared baking dish, ensuring a smooth surface for baking.
  5. Bake: Bake the casserole in the preheated oven for 25 minutes until heated through and beginning to set.
  6. Add Topping and Finish Baking: Remove the casserole from the oven, then sprinkle the remaining ½ cup of shredded cheddar cheese and the rest of the French fried onions on top. Return to the oven and bake for an additional 5 minutes, allowing the topping to melt and become crisp.

Notes

  • To reduce moisture in the casserole, be sure to drain excess liquid from the cooked squash and onions.
  • For a crispier topping, broil the casserole for 1-2 minutes after the final bake, watching carefully to avoid burning.
  • This casserole can be prepared a day ahead and refrigerated; add crispy onions just before serving to maintain texture.
  • Use low-fat or reduced-fat sour cream and cheese to lighten the dish if desired.
  • Feel free to substitute yellow squash with zucchini for a different flavor profile.