This yellow squash casserole is a delightful and hearty dish that's perfect for any meal. Combining the mild sweetness of yellow squash with the savory flavors of onion, garlic, and vegan cheese, this casserole is both comforting and nutritious. It's an excellent way to enjoy seasonal produce and makes for a great side dish or even a main course for a light dinner.
If you're not familiar with vegan cheese, it can be found in the dairy-free section of most supermarkets. Unsweetened almond milk is another ingredient that might not be in everyone's pantry, but it's readily available in the plant-based milk section. Vegan bread crumbs can usually be found in the baking aisle or the health food section. These ingredients are essential for keeping the dish vegan while still providing a rich and satisfying flavor.

Ingredients for Yellow Squash Casserole Recipe
Yellow squash: A mild and slightly sweet vegetable that forms the base of the casserole.
Onion: Adds a savory depth of flavor to the dish.
Garlic: Provides a robust and aromatic taste.
Vegan bread crumbs: Helps to bind the casserole and adds a crunchy topping.
Vegan cheese: Adds a creamy and cheesy flavor without any dairy.
Unsweetened almond milk: A plant-based milk that adds moisture and creaminess.
Olive oil: Used for sautéing and adds a rich flavor.
Salt: Enhances the overall taste of the dish.
Black pepper: Adds a hint of spice and warmth.
Technique Tip for This Recipe
When preparing the yellow squash, ensure that you slice it evenly to promote uniform cooking. This helps the casserole bake consistently, preventing some pieces from becoming too soft while others remain undercooked. Additionally, sautéing the onion and garlic in a bit of olive oil before mixing them with the other ingredients can enhance their flavors, adding depth to the overall dish.
Suggested Side Dishes
Alternative Ingredients
yellow squash - Substitute with zucchini: Zucchini has a similar texture and mild flavor, making it an excellent substitute for yellow squash.
onion - Substitute with shallots: Shallots provide a slightly sweeter and more delicate flavor, which can enhance the overall taste of the casserole.
garlic - Substitute with garlic powder: Garlic powder can be used if fresh garlic is unavailable, providing a similar flavor profile.
vegan bread crumbs - Substitute with crushed cornflakes: Crushed cornflakes can add a similar crunchy texture to the casserole.
vegan cheese - Substitute with nutritional yeast: Nutritional yeast offers a cheesy flavor and is a common vegan substitute for cheese.
unsweetened almond milk - Substitute with unsweetened soy milk: Unsweetened soy milk has a similar consistency and neutral flavor, making it a good alternative.
olive oil - Substitute with coconut oil: Coconut oil can be used for its similar cooking properties and subtle flavor.
salt - Substitute with soy sauce: Soy sauce can add a salty and umami flavor, enhancing the overall taste of the dish.
black pepper - Substitute with white pepper: White pepper provides a similar spiciness but with a slightly different flavor profile.
Other Alternative Recipes Similar to This Casserole
How To Store / Freeze This Casserole
- Allow the yellow squash casserole to cool completely before storing. This helps prevent condensation, which can make the dish soggy.
- Transfer the casserole to an airtight container. If you prefer, you can also cover the baking dish tightly with plastic wrap or aluminum foil.
- Store the casserole in the refrigerator for up to 4 days. The flavors will meld together beautifully, making it even more delicious over time.
- For longer storage, consider freezing the casserole. First, wrap the entire dish tightly in plastic wrap, then cover it with a layer of aluminum foil. This double-layer method helps prevent freezer burn.
- Label the container with the date and contents. This will help you keep track of how long the casserole has been stored.
- When ready to enjoy, thaw the casserole in the refrigerator overnight. This slow thawing process helps maintain the texture and flavor of the yellow squash and other ingredients.
- Reheat the casserole in a preheated oven at 350°F (175°C) for about 20-25 minutes, or until heated through. Cover it with foil to prevent the top from browning too much.
- If you prefer a quicker method, you can reheat individual portions in the microwave. Place the portion on a microwave-safe plate, cover it with a microwave-safe lid or another plate, and heat on medium power for 2-3 minutes, checking and stirring halfway through.
- For added freshness, sprinkle a bit of extra vegan cheese on top before reheating. This will give the casserole a delightful, melty finish.
- Enjoy your yellow squash casserole with a side of fresh salad or crusty bread for a complete and satisfying meal.
How To Reheat Leftovers
Preheat your oven to 350°F (175°C). Place the leftover yellow squash casserole in an oven-safe dish. Cover it with aluminum foil to prevent it from drying out. Bake for about 20-25 minutes, or until it's heated through and the vegan cheese is melty and bubbly.
For a quicker option, use the microwave. Transfer a portion of the casserole to a microwave-safe dish. Cover it with a microwave-safe lid or a damp paper towel to retain moisture. Heat on medium power for 2-3 minutes, stirring halfway through to ensure even heating.
If you prefer a crispy top, try reheating on the stovetop. Place a non-stick skillet over medium heat and add a small amount of olive oil. Once the oil is hot, add the casserole and spread it out evenly. Cover with a lid and cook for 5-7 minutes, stirring occasionally, until it's heated through and the top is slightly crispy.
For those with an air fryer, preheat it to 350°F (175°C). Place the casserole in the air fryer basket in a single layer. Heat for 5-7 minutes, shaking the basket halfway through to ensure even heating. This method will give you a nice, crispy top without drying out the squash.
Best Tools for This Recipe
Oven: Preheat to 350°F (175°C) to bake the casserole until golden brown and heated through.
Large mixing bowl: Combine the sliced yellow squash, chopped onion, minced garlic, bread crumbs, vegan cheese, almond milk, olive oil, salt, and black pepper.
Baking dish: Transfer the mixture to this dish and spread it out evenly for baking.
Knife: Chop the onion and slice the yellow squash.
Cutting board: Provide a surface for chopping the onion and slicing the yellow squash.
Garlic press: Mince the garlic cloves efficiently.
Measuring cups: Measure out the almond milk and bread crumbs accurately.
Measuring spoons: Measure the olive oil, salt, and black pepper precisely.
Wooden spoon: Mix all the ingredients together in the large mixing bowl.
Oven mitts: Safely handle the hot baking dish when removing it from the oven.
How to Save Time on Making This Casserole
Pre-slice the vegetables: Slice the yellow squash, onion, and garlic ahead of time and store them in the fridge.
Use a food processor: Quickly chop the onion and mince the garlic using a food processor.
Pre-make the mixture: Combine all ingredients in a mixing bowl the night before and store in the fridge.
Use pre-made bread crumbs: Save time by using store-bought vegan bread crumbs.
Shred cheese in advance: Shred the vegan cheese ahead of time and store it in an airtight container.

Yellow Squash Casserole
Ingredients
Main Ingredients
- 4 cups Yellow squash, sliced
- 1 cup Onion, chopped
- 2 cloves Garlic, minced
- 1 cup Bread crumbs Use vegan bread crumbs
- ½ cup Vegan cheese, shredded
- 1 cup Unsweetened almond milk
- 2 tablespoon Olive oil
- 1 teaspoon Salt
- ½ teaspoon Black pepper
Instructions
- Preheat your oven to 350°F (175°C).
- In a large mixing bowl, combine the sliced yellow squash, chopped onion, and minced garlic.
- Add the bread crumbs, vegan cheese, almond milk, olive oil, salt, and black pepper. Mix well.
- Transfer the mixture to a baking dish and spread it out evenly.
- Bake in the preheated oven for 30 minutes, or until the top is golden brown and the casserole is heated through.
- Remove from the oven and let it cool for a few minutes before serving.
Nutritional Value
Keywords
Suggested Appetizers and Desserts for This Casserole
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