
This Slow Cooker Cheesy Vegetable Casserole is the kind of hands-off comfort food I turn to when prepping big family dinners or holiday meals. Toss everything in your slow cooker before guests arrive and you will have a creamy bubbling side dish ready when the main course lands on the table. Whether you are feeding a crowd or just want more veggies with dinner this recipe could not be easier.
I first made this for a busy holiday dinner and my guests scraped the pot clean before we even sat down for dessert. The cheesy sauce pulls the veggies together in a way that sells even the non vegetable lovers in my crew.
Ingredients
- California medley vegetables: I go for the frozen blend of broccoli cauliflower and carrots because it saves chopping time and always turns out tender
- Cheddar cheese condensed soup: Creates a creamy base with robust cheesy taste Look for low sodium if you want to keep salt in check
- Vegetable broth: Adds moisture and lets the flavors blend together Make sure to use a good quality broth for the best result
- Shredded cheddar cheese: Sprinkled throughout the casserole for ultimate cheese pulls Choose a sharp cheddar for more punch and grate your own if possible for melty texture
Step by Step Instructions
- Prepare Ingredients:
- Add the California medley vegetables directly to your slow cooker straight from the freezer They will thaw and cook perfectly in the dish
- Mix the Cheesy Base:
- Pour in the cheddar cheese condensed soup and vegetable broth then sprinkle half of the shredded cheddar cheese Stir everything together making sure the veggies are coated well by the cheesy base
- Slow Cook:
- Cover the slow cooker and cook on low for three to four hours During this time the vegetables will soften and the flavors meld together
- Finish with More Cheese:
- Uncover and top with the remaining shredded cheddar cheese Replace the lid and let it cook for thirty more minutes allowing the cheese to fully melt and the casserole to reach an extra creamy finish
- Serve and Enjoy:
- Scoop the finished casserole into bowls or serve as a side from the slow cooker itself The vegetables should be easily pierced with a fork and the cheese should be bubbly and golden

One of my favorite parts is watching that thick cheesy layer on top melt down and hug every last bit of broccoli and carrot My kids always fight for the cheesiest scoop and I love sneaking in extra vegetables when they taste this good
Storage Tips
Keep leftovers in an airtight container for up to four days in the fridge Reheat gently in the microwave or even return to the slow cooker on low if serving again for a crowd The texture holds up especially when reheated slowly
Ingredient Substitutions
Try using Monterey jack or a blend of mozzarella for a slightly different flavor profile You can also use different frozen mixed vegetable blends if you want extra color or to use what is on hand For a richer flavor a splash of heavy cream with your broth makes it even silkier

Serving Suggestions
This casserole pairs well with roasted chicken turkey or even a fresh green salad It works as a hearty vegetarian main if you stir in cooked quinoa or brown rice right before serving Sometimes I scatter crispy onions or breadcrumbs on top for crunch
Cultural and Historical Context
Dishes like this casserole were made popular during the heyday of slow cookers in the seventies and remain staples for their ease and crowd pleasing flavor Cheesy vegetable casseroles often featured at potlucks Sunday suppers or holiday spreads because they stretch ingredients while delivering familiar cheesy comfort
Recipe FAQs
- → What vegetables are in the California medley?
The California medley typically includes broccoli, cauliflower, and carrots, offering a colorful and tasty combination in each bite.
- → Can I use fresh vegetables instead of frozen?
Yes, fresh vegetables can be used. Just chop them into bite-sized pieces and watch for tenderness during cooking.
- → Which cheese is best for this dish?
Cheddar is recommended for a sharp, rich flavor and smooth melting. Feel free to mix in other cheeses for added depth.
- → How do I prevent the casserole from getting watery?
Drain any excess moisture from frozen vegetables before adding, and avoid lifting the lid frequently during cooking.
- → Can this be made ahead of time?
Yes, the casserole reheats well. Prepare a day in advance, cool completely, and rewarm before serving for best results.
- → How do I make it more flavorful?
Add your favorite herbs, spices, or a sprinkle of garlic powder to amp up the savory notes as desired.