Slow Cooker Low Carb Broccoli Cheddar Cauliflower Casserole

Prep: 15 minCook: 4 hr1 servingsmedium
Slow Cooker Low Carb Broccoli Cheddar Cauliflower Casserole

A creamy, comfort food casserole that transforms humble vegetables into a rich, satisfying dish. Tender broccoli and cauliflower are slow-cooked with cream cheese and sharp cheddar until meltingly soft and flavorful. The slow cooker method ensures even cooking and deep flavor development while keeping the preparation minimal. Perfect for busy weeknight dinners, potluck gatherings, or as a hearty side dish for holiday meals. This low-carb version delivers all the comfort of traditional casseroles without the heavy starches.

Ingredients

1 servings
  • 8 ounce broccoli, raw
    Brussels sprouts1:1vegetarianketo

    similar texture when cooked

    Full guide →
  • 8 ounce cauliflower, raw
    zucchini1:1vegetarianketo

    different texture but low carb

    Full guide →
  • 1 tablespoon olive oil
  • ½ teaspoon salt
  • ½ teaspoon black pepper, ground
  • ¼ teaspoon onion powder
  • ¼ teaspoon garlic powder
  • 4 ounce cream cheese
    Greek yogurt1:1vegetarianlower-fat

    tangier flavor, less creamy

    Full guide →
  • ¾ cup cheddar cheese, shredded
    Gruyere cheese1:1vegetarianketo

    richer flavor profile

    Full guide →

Instructions

  1. 1

    Chop broccoli and cauliflower into small, bite-sized florets

  2. 2

    Toss vegetables with olive oil and all seasonings in a bowl

  3. 3

    Place seasoned vegetables in slow cooker

  4. 4

    Chop cream cheese into cubes and arrange over vegetables

  5. 5

    Sprinkle half the cheddar cheese over the top

  6. 6

    Cook on high heat for 4 hours

  7. 7

    Stir all ingredients together in the slow cooker

  8. 8

    Sprinkle remaining cheddar cheese over the top

  9. 9

    Replace lid and let final cheese layer melt for a couple minutes

  10. 10

    Serve hot

Tips

Tip 1

Cut vegetables uniformly for even cooking and better texture throughout the casserole.

Tip 2

Let the final cheese layer melt completely before serving to achieve the best creamy consistency.

Tip 3

Season to taste after cooking as slow cooker dishes sometimes need a flavor boost.

Good to Know

Storage

Refrigerate covered for up to 4 days. Reheat in microwave or oven until heated through.

Make Ahead

Assemble ingredients in slow cooker insert up to 1 day ahead. Refrigerate, then cook as directed.

Serve With

Serve immediately while hot and creamy for best texture and flavor.

See pairing guide →

Common Mistakes

Watch

Avoid overcooking beyond 4 hours to prevent mushy vegetables.

Watch

Don't skip stirring after cooking to ensure even cheese distribution.

Watch

Add final cheese layer off heat to avoid overcooking the cheese.

Substitutions

broccoli
Brussels sprouts1:1vegetarianketo

similar texture when cooked

Full guide →
cheddar cheese
Gruyere cheese1:1vegetarianketo

richer flavor profile

Full guide →
cauliflower
zucchini1:1vegetarianketo

different texture but low carb

Full guide →
cream cheese
Greek yogurt1:1vegetarianlower-fat

tangier flavor, less creamy

Full guide →
Find more substitutions →

FAQ

Can I use frozen vegetables instead of fresh?

Yes, but thaw and drain completely first to prevent excess moisture. Reduce cooking time by 30-60 minutes as frozen vegetables cook faster.

What if my casserole turns out too watery?

Remove the lid for the last 30 minutes of cooking to allow excess moisture to evaporate, or stir in a tablespoon of cream cheese.

How long will leftovers keep in the refrigerator?

Store covered in the refrigerator for up to 4 days. Reheat individual portions in the microwave or warm the whole dish in a 350F oven.