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Tender potatoes and cauliflower layered in a silky cheddar sauce with sweet caramelized onions — creamy, golden, and pure comfort. Easy to make, freezer-friendly, and perfect for weeknights or gatherings. Follow along for simple tips, freezing & reheating advice, and plating ideas to make this casserole your new go-to. Creamy Potato & Cauliflower Casserole | Cheesy Comfort Bake with Caramelized Onions Tender potatoes and cauliflower layered in a silky sharp cheddar sauce with slowly caramelized onions — creamy, golden, and pure comfort. Easy to make, freezer-friendly, and perfect for weeknights, potlucks, or a cozy family dinner. ✨ What makes this recipe special: • Tender cauliflower and potatoes baked in a silky cheddar sauce • Caramelized onions for deep, savory flavor • Simple ingredients, big flavor, and minimal cleanup • Perfect for meal prep, freezing, or family gatherings 📌 Ingredients: - One large yellow onion, sliced - Butter: 6 tbsp, divided - Olive Oil: 1 tbsp - Dried thyme: 1/2 tsp - One medium head cauliflower, about 1.5 to 2 lbs - 2 large cloves of garlic - Flour: 4 tbsp - Whole Milk: 3 cups, about 700 ml - Mustard powder: 1/2 tsp - Salt : 1/2 tsp - Smoked Paprika: 1/4 tsp - Black pepper: 1/4 tsp - Ground nutmeg: 1/8 tsp - Cayenne pepper: a pinch ( about 1/8 tsp) - Yukon gold or russet potatoes, slice thinly ( 1/8 inch thick) enough to cover the bottom of your baking dish - Cheddar cheese: 2 1/2 cups for the sauce and 1 cup for topping - Soft cream cheese: 2 tbsp, at room temperature - Minced parsley for garnishing ⸻ ⏱️ Timestamps & 📝 Short recipe snapshot 00:00 Slicing and starting to caramelize the onions 00:48 Cutting, blanching and drying the cauliflower 02:39. Making the creamy cheddar sauce 06:00 Assembling 07:16 Baking 07:58 Taste test & serving 📌 Cover with foil and Bake in preheated oven at 375°F/ 190°C for 35 minutes Then, uncover and bake for another 25 to 30 minutes. Broil for 1-2 minutes ⸻ ❄️ Storage & Reheating Cool completely, then freeze whole or in portions in an airtight container — keeps 2–3 months. When reheating, thaw overnight, then bake at 350°F (175°C) for 20–30 minutes covered; uncover for the last 5–10 minutes. Microwave portions on medium until hot. If the sauce thickens, stir in a splash of milk to restore creaminess. ⸻ 🍽️ Serving Suggestions Serve as a cozy vegetarian main or a rich side with roasted chicken or pan-seared steak. Top with minced parsley for brightness. ⸻ 💬 If this recipe looks good to you, please give it a like and share it with someone who’d enjoy it 👍— it really helps and I appreciate your support.🥰 Lovely people, if you want more delicious recipes, subscribe and let’s cook together.🔔👇🏻 https://youtube.com/@Puredeliciouss?si=szgsOsJN-iQTwKM4 ⸻ potato casserole, cauliflower casserole, creamy casserole recipe, cheesy cauliflower bake, cheesy potato bake, comfort food recipe, one pan dinner, cheesy casserole, cauliflower cheese, baked cauliflower, family dinner recipe, easy casserole recipe, vegetarian casserole, cheddar cheese sauce, caramelized onions recipe ⸻ #CheesyCasserole #ComfortFood #CauliflowerBake