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Everything Bagel Cauliflower Casserole

Everything Bagel Cauliflower Casserole


  • Author: BeauCollier

Description

This casserole takes humble cauliflower and transforms it into a garlicky, cheesy, crunchy delight. Inspired by everything bagels, it combines tender florets, a creamy parmesan sauce, and the iconic bagel seasoning for a dish that’s perfect as a side or a main. Simple enough for weeknights, special enough for holidays.


Ingredients

Scale

Casserole:

  • 4 large heads cauliflower, cored and chopped into florets

  • 6 tbsp unsalted butter

  • 10 garlic cloves, thinly sliced

  • 1 cup whole wheat or white whole wheat flour (all-purpose works too)

  • 34 cups skim milk (or any milk of choice)

  • 1 tsp black pepper

  • 3 cups freshly shredded parmesan cheese

  • 4 tbsp everything bagel seasoning

Optional Add-Ins:

  • 1 tsp Dijon mustard (for a tangy kick)

  • 1 cup cream cheese (for extra creaminess)

  • 1/2 cup chopped scallions or chives

  • Panko breadcrumbs + olive oil for crunchy topping

  • Crushed red pepper flakes for heat


Instructions

  1. Preheat Oven: 375°F (190°C). Grease a large casserole dish or two 9×13 pans.

  2. Cook Cauliflower: Steam or boil florets until just fork-tender (5–7 min). Drain thoroughly and pat dry.

  3. Make Garlic Butter Base: Melt butter over medium heat. Add sliced garlic and cook 1–2 min until fragrant and translucent.

  4. Create Roux: Whisk in flour, cooking 1 min to remove raw taste.

  5. Make Cream Sauce: Gradually whisk in milk, 1 cup at a time, until smooth. Cook 5–8 min until thickened.

  6. Add Cheese & Seasoning: Reduce heat to low. Stir in black pepper, parmesan, and optional add-ins like cream cheese or Dijon.

  7. Combine with Cauliflower: Remove from heat, fold in cauliflower and half the everything bagel seasoning.

  8. Top & Bake: Transfer to casserole dish. Sprinkle remaining bagel seasoning and optional panko topping. Bake 20–25 min until bubbly and golden. Let cool 10 min before serving.

Notes

  • Avoid Watery Casserole: Drain and dry cauliflower thoroughly.

  • Smooth Sauce: Add milk slowly and whisk constantly; use an immersion blender if needed.

  • Make Ahead: Assemble, refrigerate up to 24 hours, then bake (add 5–10 min if baking cold).

  • DIY Everything Bagel Seasoning: Mix 2 tbsp dried minced onion, 2 tbsp dried minced garlic, 1 tbsp white sesame seeds, 1 tbsp black sesame seeds, 1 tbsp poppy seeds, 2 tsp flaky sea salt.

Nutrition

  • Calories: ~210 Cal
  • Fat: 12g
  • Carbohydrates: 14g
  • Protein: 12g