Vegetable Casserole
This Vegetable Casserole is the ultimate comfort food that brings together creamy flavors and wholesome ingredients. Perfect for family gatherings, potlucks, or a cozy weeknight dinner, this dish showcases a delightful combination of tender rice, melty cheddar cheese, and colorful vegetables. Its versatility allows you to use fresh or frozen veggies, making it an easy go-to recipe any time of the year.

Why You’ll Love This Recipe
- Quick and Easy: This casserole comes together in just 10 minutes of prep time, perfect for busy weeknights.
- Family-Friendly: Packed with cheesy goodness and veggies, even the pickiest eaters will enjoy this meal.
- Customizable: Feel free to swap out vegetables or cheeses based on what you have on hand for a unique twist every time.
- Make-Ahead Option: Prepare it ahead of time and just pop it in the oven when you’re ready to serve.
- Hearty and Satisfying: With rice and eggs as base ingredients, this dish is filling enough to stand alone or serve as a side.
Tools and Preparation
Before diving into making your vegetable casserole, gather all necessary tools to streamline your cooking experience.
Essential Tools and Equipment
- Large pot
- 9×13-inch casserole dish
- Whisk
- Mixing bowl
- Cooking spoon
Importance of Each Tool
- Large pot: Essential for sautéing onions and combining all ingredients smoothly.
- Casserole dish: Provides an even baking surface for perfect texture.
- Whisk: Helps to combine wet ingredients thoroughly without lumps.
Ingredients
Main Casserole:
- 1 small yellow onion, finely diced
- 1 tablespoon butter
- 10.5 oz condensed cream of mushroom soup
- ½ cup milk
- ½ cup sour cream
- 8 oz shredded cheddar cheese, divided
- 2 heaping cups frozen broccoli
- 3 cups frozen mixed vegetables
- 2 large eggs, whisked
- 2 cups cooked white long grain rice
Seasonings:
- ½ teaspoon garlic salt
- ½ teaspoon salt
- ½ teaspoon mustard powder
- ½ teaspoon Italian seasoning
- ¼ teaspoon black pepper
Topping:
- 1 cup Ritz crackers, crushed (about ¾ sleeve)
- 2 tablespoons melted butter

How to Make Vegetable Casserole
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C). Lightly grease your 9×13-inch casserole dish to prevent sticking.
Step 2: Sauté the Onions
In a large pot over medium heat:
1. Melt the butter.
2. Add the diced onions and sauté for about 5 minutes until they are softened.
Step 3: Combine Creamy Ingredients
Add the following ingredients to the pot:
– Cream of mushroom soup
– Milk
– Sour cream
– Garlic salt
– Salt
– Mustard powder
– Italian seasoning
– Black pepper
Stir these ingredients together until well combined.
Step 4: Melt Cheese
Stir in 1 cup of shredded cheddar cheese into the mixture until it melts completely and becomes smooth.
Step 5: Add Vegetables and Rice
Gently fold in:
– Frozen broccoli
– Frozen mixed vegetables
Heat through but don’t boil. Remove from heat once everything is warmed. Allow cooling slightly before proceeding.
Step 6: Mix in Eggs and Rice
Add:
– Whisked eggs
– Cooked white rice
Mix everything well until evenly distributed.
Step 7: Transfer to Casserole Dish
Pour your vegetable mixture into the prepared casserole dish. Top with remaining cheddar cheese.
Step 8: Bake
Cover with foil and bake for 20 minutes.
Step 9: Prepare Topping
While it’s baking, combine crushed Ritz crackers with melted butter in a small bowl.
Step 10: Final Bake
After 20 minutes:
1. Remove foil.
2. Sprinkle buttery cracker mixture over the top.
3. Bake uncovered for an additional 10 minutes, or until topping is golden brown.
Let rest for a few minutes before serving to set up nicely. Enjoy your delicious Vegetable Casserole!
How to Serve Vegetable Casserole
Serving your Vegetable Casserole can elevate your dining experience and make it even more enjoyable. Here are some creative ways to serve this dish that will impress your family and friends.
Pair with a Side Salad
- Garden Salad: A fresh garden salad with mixed greens, cucumbers, and a light vinaigrette complements the creamy casserole perfectly.
- Caesar Salad: The rich flavors of a Caesar salad balance well with the veggie-packed casserole, adding a nice crunch.
Accompany with Bread
- Garlic Bread: Serve warm garlic bread for a tasty side that adds an aromatic touch.
- Dinner Rolls: Soft, fluffy dinner rolls are great for soaking up any leftover sauce from the casserole.
Add a Protein
- Grilled Chicken: Adding grilled chicken on the side can turn this dish into a heartier meal.
- Baked Fish: A light baked fish dish pairs nicely and keeps the meal healthy.
Include a Dip
- Hummus and Veggies: A platter of hummus with crunchy vegetable sticks serves as a great appetizer before the main dish.
- Spinach Dip: Creamy spinach dip can be a fun addition to the table for extra flavor.
How to Perfect Vegetable Casserole
To achieve the best Vegetable Casserole, keep these helpful tips in mind. They will ensure your casserole is creamy, flavorful, and satisfying every time you make it.
- Bold Use of Cheese: Incorporate different types of cheese such as pepper jack or gouda for enhanced flavor.
- Bold Vegetable Choices: Experiment with seasonal vegetables like zucchini or bell peppers to keep it fresh and exciting.
- Bold Cooking Method: Sauté vegetables before adding them to enhance their flavors and texture in the casserole.
- Bold Seasoning Adjustments: Don’t hesitate to adjust seasonings according to your taste; adding herbs like thyme or basil can elevate the dish.
- Bold Preparation Techniques: Try mixing in some cooked quinoa or lentils for added nutrition and texture variation.
- Bold Serving Suggestions: Consider serving with a sprinkle of fresh herbs on top just before serving for an extra pop of color and flavor.

Best Side Dishes for Vegetable Casserole
Choosing the right side dishes can complement your Vegetable Casserole beautifully. Here are some excellent options to consider when planning your meal.
- Steamed Asparagus: Lightly seasoned asparagus adds freshness and crunch next to the creamy casserole.
- Roasted Brussels Sprouts: Caramelized Brussels sprouts provide a delightful contrast in flavor and texture.
- Mashed Potatoes: Creamy mashed potatoes make for a comforting pairing that everyone loves.
- Coleslaw: A tangy coleslaw offers refreshing acidity that cuts through the richness of the casserole.
- Quinoa Salad: A light quinoa salad with lemon dressing adds brightness while keeping it healthy.
- Corn on the Cob: Sweet corn on the cob evokes summer vibes and is always a hit at dinner tables.
- Mixed Grains Pilaf: A pilaf made with farro or barley brings nutty flavors that work well alongside veggie dishes.
Common Mistakes to Avoid
When making a Vegetable Casserole, it’s easy to overlook some details. Here are common mistakes to watch out for:
- Using the wrong rice: Always use long grain white rice for the best texture. Short grain can become too sticky and change the dish’s consistency.
- Skipping pre-cooking vegetables: Avoid adding raw vegetables directly into the casserole. Pre-cook them slightly to ensure they are tender when served.
- Ignoring seasoning levels: Don’t forget to taste and adjust seasonings. Under-seasoning can lead to a bland casserole.
- Not letting it cool before serving: Serving immediately can result in a messy portion. Allowing it to rest helps it set up nicely.
- Not covering while baking: Covering with foil during the initial baking keeps moisture in, preventing the casserole from drying out.
Storage & Reheating Instructions
Refrigerator Storage
- item Store leftovers in an airtight container for up to 3 days.
- item Make sure the casserole is completely cooled before refrigerating.
Freezing Vegetable Casserole
- item Freeze in a freezer-safe container for up to 3 months.
- item Consider dividing into smaller portions for easier thawing.
Reheating Vegetable Casserole
- Oven: Preheat to 350°F (175°C). Heat uncovered for about 20 minutes until warmed through.
- Microwave: Place portions in a microwave-safe dish. Heat on high for 2-3 minutes, stirring halfway through.
- Stovetop: Warm over medium heat, stirring occasionally, until hot throughout.

Frequently Asked Questions
Can I use fresh vegetables in my Vegetable Casserole?
Yes, you can use fresh vegetables! Just steam or sauté them until they are about 90% cooked before mixing them in.
How do I make my Vegetable Casserole gluten-free?
To make it gluten-free, substitute Ritz crackers with gluten-free breadcrumbs or crushed gluten-free crackers.
Can I prepare Vegetable Casserole ahead of time?
Absolutely! You can assemble it and refrigerate (without topping) for up to two days. Just add the topping before baking.
What can I substitute for sour cream?
Plain Greek yogurt works as a perfect alternative if you’re looking for a healthier option that provides similar creaminess.
How do I store leftover Vegetable Casserole?
Store leftovers in an airtight container in the refrigerator for up to three days or freeze for longer storage.
Final Thoughts
This Vegetable Casserole is not only creamy and delicious but also versatile enough to be customized according to your preferences. Whether you choose different veggies or toppings, this dish promises comfort and satisfaction. Give it a try and enjoy a delightful meatless meal!

Vegetable Casserole
- Prep Time: 10 minutes
- Cook Time: 30 minutes
- Total Time: 40 minutes
- Yield: Serves approximately 8 people 1x
- Category: Main
- Method: Baking
- Cuisine: American
Description
This Vegetable Casserole is the epitome of comfort food, combining creamy textures and vibrant flavors in a hearty dish that’s perfect for any occasion.
Ingredients
- 1 small yellow onion, finely diced
- 1 tablespoon butter
- 10.5 oz condensed cream of mushroom soup
- ½ cup milk
- ½ cup sour cream
- 8 oz shredded cheddar cheese, divided
- 2 heaping cups frozen broccoli
- 3 cups frozen mixed vegetables
- 2 large eggs, whisked
- 2 cups cooked white long grain rice
- ½ teaspoon garlic salt
- ½ teaspoon salt
- ½ teaspoon mustard powder
- ½ teaspoon Italian seasoning
- ¼ teaspoon black pepper
- 1 cup Ritz crackers, crushed (about ¾ sleeve)
- 2 tablespoons melted butter
- 2 tablespoons fresh parsley, finely chopped
Instructions
- Preheat your oven to 350°F (175°C) and grease a 9×13-inch casserole dish.
- In a large pot over medium heat, melt the butter and sauté the diced onion until softened (about 5 minutes).
- Stir in the cream of mushroom soup, milk, sour cream, and seasonings until well combined.
- Mix in 1 cup of shredded cheddar cheese until melted.
- Fold in the frozen broccoli and mixed vegetables; remove from heat once warmed.
- Allow the mixture to cool slightly before adding whisked eggs and cooked rice; mix thoroughly.
- Pour into the prepared casserole dish and top with remaining cheese.
- Cover with foil and bake for 20 minutes, then add crushed Ritz crackers mixed with melted butter on top and bake uncovered for an additional 10 minutes until golden.
Nutrition
- Serving Size: 1 serving
- Calories: 310
- Sugar: 3g
- Sodium: 680mg
- Fat: 16g
- Saturated Fat: 9g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 34g
- Fiber: 3g
- Protein: 12g
- Cholesterol: 80mg