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Baked Cauliflower Casserole (Mexican Mac & Cheese!)

Warm, cheesy, and packed with flavor, this Baked Cauliflower Casserole is a healthier twist on classic mac and cheese with a delicious Mexican flair. Loaded with veggies, spices, and gooey cheddar, it’s a cozy one-pot meal that’s kid-approved, keto-friendly (if you skip the breadcrumbs), and perfect for weeknights or hosting!
Prep Time 15 minutes
Cook Time 20 minutes
Servings 4 people

Equipment

  • Baking dish
  • Large pan or skillet
  • Mixing spoon
  • Oven
  • Knife & chopping board

Ingredients
  

  • 1 head cauliflower cut into florets
  • Salt as needed
  • cups yellow cheddar cheese shredded
  • 1 tbsp butter
  • ½ cup chopped onions
  • ½ cup chopped bell peppers
  • ½ cup yellow corn
  • 2 tbsp minced garlic
  • 1 tbsp all-purpose flour skip for keto
  • ½ cup milk
  • ½ tsp cumin powder
  • 1 tsp taco seasoning
  • 1 tsp cayenne powder or red chili powder
  • ½ cup breadcrumbs optional
  • 1 sliced jalapeño
  • ¼ cup chopped cilantro

Instructions
 

Prep the Cauliflower

  • Wash and cut into medium florets.
  • Blanch or steam until just tender.
  • Drain and set aside.

Make the Cheese Sauce

  • Melt butter in a pan.
  • Sauté onions, bell peppers, garlic, and corn until soft.
  • Add flour and stir for 30 seconds.
  • Pour in milk and whisk until slightly thick.
  • Add cumin, taco seasoning, cayenne, salt, and cheddar cheese.
  • Stir until the cheese melts into a smooth sauce.

Assemble the Casserole

  • Add the cauliflower to the sauce and mix gently.
  • Pour everything into a baking dish.
  • Top with breadcrumbs (optional), jalapeño slices, and extra cheese.

Bake

  • Bake at 400°F (200°C) for 25–30 minutes until golden and bubbly.

Garnish & Serve

  • Sprinkle fresh cilantro on top and serve warm.