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Easy Jalapeño Popper Cauliflower Casserole – Cheesy, Spicy & Low-Carb

This Easy Jalapeño Popper Cauliflower Casserole is creamy, cheesy, and packed with flavor! Featuring roasted cauliflower, spicy jalapeños, crispy bacon, and a rich cheese sauce, it’s the ultimate comfort food with a low-carb twist. Perfect as a side dish or a satisfying main for family dinners, parties, or meal prep.
Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes
Course Main Course, Side Dish
Cuisine American, Comfort Food, Keto-Friendly
Servings 6
Calories 290 kcal

Equipment

  • 9x13-inch casserole dish
  • Large mixing bowl
  • Sharp knife & cutting board
  • Skillet (for bacon & jalapeños)
  • Wooden spoon or spatula
  • Baking sheet (if roasting cauliflower)
  • Oven mitts

Ingredients
  

  • 1 large head cauliflower (about 6 cups florets), fresh or frozen
  • 6 oz cream cheese, softened
  • 1 cup sharp cheddar cheese, shredded
  • 1 cup mozzarella cheese, shredded
  • 3–4 fresh jalapeños, deseeded & chopped (or to taste)
  • 4 slices bacon, cooked & crumbled
  • 2 cloves garlic, minced
  • 2 tbsp olive oil (or butter)
  • ½ tsp smoked paprika
  • ½ tsp onion powder
  • Salt & black pepper, to taste
  • Optional garnish: fresh parsley, green onions, or extra jalapeño slices

Instructions
 

  • Prep Cauliflower: Preheat oven to 400°F (200°C). Cut cauliflower into florets. Roast on a baking sheet with olive oil, salt, and pepper for 15–20 minutes, until tender and slightly golden.
  • Cook Bacon & Jalapeños: In a skillet, cook bacon until crispy. Remove and crumble. In the same skillet, sauté garlic and chopped jalapeños for 2–3 minutes.
  • Mix Base: In a large bowl, combine cream cheese, cheddar, mozzarella, paprika, onion powder, roasted cauliflower, and sautéed jalapeños. Stir until coated.
  • Assemble Casserole: Spread mixture evenly in a greased 9x13-inch casserole dish. Top with remaining cheese and crumbled bacon.
  • Bake: Place in oven and bake for 20–25 minutes, until bubbly and golden on top.
  • Finish & Serve: Let rest 5 minutes before serving. Garnish with fresh parsley, green onions, or jalapeño slices.

Notes

  • For milder heat, remove all seeds and membranes from jalapeños or substitute with canned green chiles.
  • For extra spice, add cayenne pepper, hot sauce, or swap cheddar for pepper jack cheese.
  • Can be made vegetarian by skipping bacon or using plant-based bacon.
  • Store leftovers in the fridge up to 4 days, or freeze unbaked casserole for 2 months.
  • Best reheated in the oven to maintain crispy edges and creamy texture.
Keyword cauliflower casserole, cheesy casserole, jalapeño popper casserole, keto side dish, Low-carb comfort food, spicy cauliflower bake