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Crispy Keto Zero-Carb Onion Rings with Bloomin’ Onion Sauce

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  • Prep time: 20 minutes

  • Cook time: 10 minutes

  • Total time: 30 minutes

  • Yield: 4 servings (approx. 12–15 onion rings)

  • Intensity Level: Intermediate

Ingredients

For the “Onion” Rings:

  • 2 cans (14 oz each) whole hearts of palm: Drained, rinsed, and sliced crosswise into thick 1/2-inch rounds to form natural “rings.”

  • ½ cup unflavored protein powder (isolate) or almond flour: Used as the dry dusting layer.

  • 2 large pasture-raised eggs: Whisked thoroughly with 1 tablespoon of water to create an egg wash.

  • 1 ½ cups plain pork rinds: Finely crushed into breadcrumb-like consistency using a food processor.

  • ½ cup finely grated Parmesan cheese: Blended with the crushed pork rinds for extra crispness and savory depth.

  • 1 teaspoon garlic powder

  • 1 teaspoon smoked paprika

  • ½ teaspoon onion powder

  • ½ teaspoon kosher salt

  • ¼ teaspoon freshly ground black pepper

  • Avocado oil or high-heat cooking spray: For air frying or frying.

For the Bloomin’ Onion Dipping Sauce:

  • ½ cup high-quality mayonnaise

  • 2 tablespoons creamy prepared horseradish

  • 1 tablespoon ketchup (sugar-free or low-sugar variety)

  • 1 teaspoon paprika

  • ¼ teaspoon garlic powder

  • ¼ teaspoon onion powder

  • ¼ teaspoon cayenne pepper (adjust for preferred heat level)

  • A pinch of salt and black pepper

Step-by-Step Instructions

Step 1: Prepare the Hearts of Palm “Rings”

  1. Drain and thoroughly rinse the canned hearts of palm under cold running water to remove any canning liquid flavor. Pat them completely dry with clean paper towels.

  2. Slice the cylinder stalks crosswise into 1/2-inch thick rounds. Gently pop out the inner core of each round to form clean, hollow onion-like rings. Set aside on a paper towel-lined plate.

Step 2: Set Up Your Breading Station

Set up three shallow bowls in an assembly line to ensure a clean and efficient breading process:

  • Bowl 1: The keto flour blend (unflavored protein powder or fine almond flour).

  • Bowl 2: The whisked eggs and water wash.

  • Bowl 3: The ultra-crispy coating blend, made by thoroughly mixing the crushed pork rinds, grated Parmesan cheese, garlic powder, smoked paprika, onion powder, salt, and black pepper.

Step 3: Bread the Rings

  1. Take a heart of palm ring and lightly dredge it in Bowl 1 (protein powder/almond flour), shaking off any excess. This helps the liquid bind properly.

  2. Dip the floured ring into Bowl 2 (egg wash), ensuring it is fully coated.

  3. Transfer the ring into Bowl 3 (pork rind and Parmesan mixture), pressing down firmly so the crumbs adhere thickly to all sides. Place the breaded ring onto a clean wire rack. Repeat for all remaining rings.

Step 4: Cook to Golden Perfection

  • Air Fryer Method (Recommended): Preheat your air fryer to 400°F (200°C) for 5 minutes. Arrange the breaded rings in a single layer in the air fryer basket without overcrowding them (cook in batches if necessary). Generously spray the tops with avocado oil spray. Cook for 8 to 10 minutes, carefully flipping halfway through and spraying the other side, until the coating is deeply golden brown and audibly crunchy.

  • Oven-Baked Method: Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper and place a wire cooling rack on top. Lightly grease the rack. Arrange the rings in a single layer, spray evenly with cooking oil, and bake for 12 to 15 minutes, flipping halfway, until crispy.

Step 5: Whisk Together the Bloomin’ Sauce

While the rings are cooking, combine all the dipping sauce ingredients (mayonnaise, horseradish, sugar-free ketchup, paprika, garlic powder, onion powder, cayenne pepper, salt, and black pepper) in a small mixing bowl. Whisk vigorously until smooth and creamy. Cover and place in the refrigerator to let the flavors meld.

Step 6: Serve Immediately

Transfer the hot, crispy keto onion rings to a serving platter alongside a small bowl of the chilled Bloomin’ Onion dipping sauce. Serve immediately while piping hot and ultra-crunchy.

Chef’s Pro Tips for Success

  • Dry the Hearts Completely: Moisture is the enemy of crispiness. Make sure your hearts of palm are completely dried with paper towels before starting the breading process.

  • Fine Pork Rind Crumbs: Ensure your pork rinds are processed down into a fine sand-like texture rather than large flakes so they adhere evenly like traditional breadcrumbs.

  • Do Not Overcrowd: Whether air frying or baking, leave space between the rings so air can circulate freely, guaranteeing a crunch on all sides.

Storage and Reheating

  • Storage: Leftover rings can be stored in an airtight container in the refrigerator for up to 2 days.

  • Reheating: To restore their crisp texture, do not microwave them. Reheat them in the air fryer at 375°F for 3 to 4 minutes until hot and re-crisped.

Nutritional Information

  • Serving size: Approximately 3–4 onion rings plus 2 tablespoons of sauce

  • Calories: 210 kcal

  • Total Fat: 16 g

  • Saturated Fat: 3.5 g

  • Cholesterol: 55 mg

  • Sodium: 480 mg

  • Total Carbohydrates: 3 g

  • Dietary Fiber: 1 g

  • Net Carbs: 2 g

  • Protein: 12 g

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