There are side dishes… and then there are side dishes that mysteriously disappear before dinner is even over! This Cheesy Alfredo Cauliflower Casserole falls firmly into the second category. Tender cauliflower is coated in a rich, creamy Alfredo sauce, loaded with melty cheese, and topped with buttery crackers for just the right crunch.
The best part? There's no homemade white sauce to fuss with, which means you can have this cozy casserole in the oven with minimal effort and maximum comfort-food payoff on the table quickly!
What makes this recipe irresistible
This casserole keeps things simple without tasting shortcut-y. It's easy enough for a weeknight side dish but hearty enough to pair with grilled chicken, steak, pork chops, or even ham for Sunday dinner.
Leftovers reheat beautifully too, which means lunch the next day might honestly be even better.
Cheesy Cauliflower Casserole
Equipment
- 1 9x13 casserole dish
Ingredients
- 1 large head cauliflower cut into florets - about 8 cups
- 15 ounces Alfredo sauce
- 1 cup shredded cheddar cheese
- ½ cup grated Parmesan cheese
- ½ cup sour cream
- 1 teaspoon Montreal steak seasoning
- ½ cup crushed buttery crackers I used Cheez Its
- 2 tablespoons melted butter for topping
- ½ cup cooked crumbled bacon
Instructions
- Preheat the oven to 375°F. Lightly grease a 9x13 baking dish.
- Bring a large pot of salted water to a boil. Add cauliflower and cook for 5-6 minutes until just fork-tender. Drain really well (this matters-no watery casseroles here).
- In a large bowl, combine the Alfredo sauce, sour cream, cheddar cheese, Parmesan, and Montreal steak seasoning. Stir until smooth and creamy.
- Add the cooked cauliflower to the bowl and gently toss until everything is evenly coated.
- Spoon the mixture into the prepared baking dish and spread evenly.
- Mix crushed crackers with melted butter and sprinkle over the top. Finish by topping with the crumbled cooked bacon.
- Bake uncovered for 25-30 minutes until hot and bubbly with a golden, crispy top.
Nutrition
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Ingredients
Please refer to the printable recipe card for the exact measurements for this recipe.
Frequently asked questions (FAQ's)
Yes. Assemble the casserole up to a day ahead, cover tightly, and refrigerate until ready to bake. Add the buttery cracker topping right before baking so it stays crisp.
Absolutely! Thaw it first and drain it well before adding it to the casserole. Frozen cauliflower tends to release more moisture than fresh, so removing as much liquid as possible makes a big difference.
Definitely. Cheddar gives this casserole a classic flavor, but Monterey Jack, Colby Jack, mozzarella, Gruyère, or smoked gouda all work well too.
Deb's top tips
Drain the cauliflower well...like, really well. A quick pat with paper towels isn't overkill. Nobody likes a watery casserole!
- Taste your Alfredo before adding seasoning. Some jars are already salty.
Make It a Meal
Stir in cooked chicken or ham to turn this into a full dinner or add steamed vegetables or leftover roasted broccoli for a little color (and to pretend we're being extra responsible!). Serve it alongside grilled meat, or just grab a fork and call it dinner!
Related recipes
If your family loves easy vegetable casseroles, you've got to try a few more reader favorites! My Broccoli Casserole is creamy, cheesy, and always disappears first at potlucks. Old Fashioned Squash Casserole is loaded with buttery cracker topping and serious comfort-food energy.
And Corn Casserole? That one shows up to every holiday dinner like it owns the place. They're all easy, family-friendly sides that fit right in beside this cauliflower casserole!
Let's wrap this up
This is one of those "how is this so easy but tastes like I tried?" kind of recipes. It's creamy, comforting, and just fancy enough to feel like you did something special… without actually doing anything complicated.
Make it once, and don't be surprised when it shows up on your table again next week, I promise!
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