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Flavorful Grilled Kielbasa Sausage Recipe with Caramelized Onions and Mustard

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A simple yet flavorful grilled kielbasa sausage recipe topped with sweet caramelized onions and tangy mustard, perfect for quick and satisfying meals.

Ingredients

Scale
  • 1 pound kielbasa sausage (pre-cooked or fresh)
  • 2 large yellow onions, thinly sliced
  • 2 tablespoons extra virgin olive oil
  • 1 tablespoon butter
  • 2 tablespoons yellow mustard
  • 1 teaspoon brown sugar (optional)
  • Salt, to taste
  • Freshly ground black pepper, to taste

Instructions

  1. Peel and slice two large yellow onions thinly.
  2. Heat 2 tablespoons olive oil and 1 tablespoon butter in a large skillet over medium heat.
  3. Add the sliced onions, sprinkle with a pinch of salt, and stir to coat.
  4. Cook slowly, stirring occasionally for about 20-25 minutes until onions are deep golden brown and smell sweet and rich. Add 1 teaspoon brown sugar and a pinch of black pepper near the end to boost caramelization.
  5. Preheat grill to medium-high heat (around 375°F). Clean and oil the grates.
  6. Place sausages on the grill and cook for 4-5 minutes per side, turning once or twice until nicely charred but not burnt.
  7. Remove sausages from heat and let rest for a couple of minutes.
  8. Slice sausages diagonally into ½-inch thick pieces.
  9. Pile caramelized onions over the sliced kielbasa and drizzle with 2 tablespoons yellow mustard.
  10. Serve immediately with extra mustard on the side if desired.

Notes

Do not rush caramelizing onions; slow cooking develops the best flavor. Score sausages lightly to keep juices inside and prevent flare-ups. Rest sausages after grilling for juiciness. If onions stick, add a splash of water or extra butter. Can substitute turkey or plant-based sausage and use dairy-free butter alternatives.

Nutrition

Keywords: grilled kielbasa, caramelized onions, mustard, sausage recipe, easy grilling, summer BBQ, quick dinner

Find it online: https://coracooks.com/flavorful-grilled-kielbasa-sausage-recipe-with-caramelized-onions-and-mustard-easy-step-by-step-guide/