Grilled Kielbasa with Caramelized Onions and Spicy Mustard Sauce

By AislePrompt Editorial · Published 2026-05-22 · Updated 2026-05-22

How this recipe was made — this recipe was drafted by AislePrompt's AI-assisted pipeline from technique templates and USDA-sourced nutrition data, and published by AislePrompt Editorial — see how AislePrompt recipes are developed and reviewed.

Smoky Polish kielbasa grilled to perfection, topped with sweet caramelized onions and served alongside a tangy, spicy mustard dipping sauce. This Polish-inspired grilling recipe, ready in about 40 minutes, pairs Polish kielbasa sausage, yellow onion, olive oil for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 350 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Cook: 30 min Serves 4 Polish cuisine 350 cal/serving

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Ingredients

1 lb, sliced into 1/2-inch pieces Polish kielbasa sausage
2 large, thinly sliced yellow onion
3 tbsp olive oil
1 tbsp brown sugar
3 tbsp Dijon mustard
2 tbsp whole grain mustard
1 tsp hot sauce
1 tbsp apple cider vinegar
1/2 tsp salt
1/4 tsp black pepper
2 tbsp, chopped for garnish fresh parsley

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Instructions

Step 1: Heat 2 tbsp olive oil in a large skillet over medium heat. Add 2 thinly sliced large yellow onions with 1 tbsp brown sugar, 1/2 tsp salt, and 1/4 tsp black pepper. Cook, stirring occasionally, for 20-25 minutes until onions are deeply golden and caramelized.
Step 2: Meanwhile, preheat grill to medium-high heat (about 400°F). Toss 1 lb sliced kielbasa with 1 tbsp olive oil.
Step 3: Grill kielbasa slices for 3-4 minutes per side until grill marks form and edges are slightly crispy.
Step 4: In a small bowl, whisk together 3 tbsp Dijon mustard, 2 tbsp whole grain mustard, 1 tsp hot sauce, and 1 tbsp apple cider vinegar until smooth.
Step 5: Arrange grilled kielbasa on a serving platter, top with caramelized onions, drizzle with spicy mustard sauce, and sprinkle 2 tbsp chopped fresh parsley over the top.