Kuddelfleck-Style Crispy Mushroom & Mustard Caper Skillet – Authentic Luxembourg Recipe

Golden breaded mushroom steaks served in a zesty Luxembourgish mustard, white wine, and caper tomato sauce.

Country of Origin
🇱🇺 Luxembourg (Western Europe, Europe)
Dietary Profile
vegetarian
Prep Time
15 min
Cook Time
20 min
Difficulty
Easy
Signature Staples
Thick-cut king oyster and portobello mushrooms breaded and pan-crisped, Boiled potatoes, Tangy tomato-caper sauce, Luxembourgish mustard, Dry white wine

Ingredients for Kuddelfleck-Style Crispy Mushroom & Mustard Caper Skillet (4 Servings)

  • 1.25 lbs (or 2.5 cups) thick-cut king oyster and portobello mushrooms breaded and pan-crisped, prepped into bite-sized pieces
  • 1.5 cups boiled potatoes, washed and trimmed
  • 1 cup tangy tomato-caper sauce
  • 1 medium onion and 3 cloves garlic, finely minced with Luxembourgish mustard
  • 1.5 tbsp traditional Luxembourg seasoning (dry white wine, garlic, flat-leaf parsley)
  • 2.5 tbsp traditional cooking oil, sea salt, cracked black pepper, and fresh citrus or herbs

Step-by-Step Cooking Instructions

  1. Heat oil in a wide heavy skillet over medium-high heat until shimmering.
  2. Sauté onion, garlic, and Luxembourgish mustard for 2–3 minutes until softened and fragrant.
  3. Add thick-cut king oyster and portobello mushrooms breaded and pan-crisped and boiled potatoes along with dry white wine, garlic, flat-leaf parsley, searing for 8–10 minutes while tossing occasionally.
  4. Deglaze the pan with a splash of broth or citrus so the caramelized fond coats every bite.
  5. Garnish with tangy tomato-caper sauce and serve straight from the skillet.

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