Lemon-Herb Creamy Mustard Chicken with Asparagus

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Tender chicken thighs bathed in a tangy, dairy-free mustard sauce with fresh herbs and roasted asparagus for a vibrant, Whole30-compliant weeknight dinner. This mediterranean-inspired chicken (whole30, keto) ready in about 33 minutes pairs boneless chicken thighs, avocado oil, minced garlic for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 420 calories and feeds 2, 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.

★ 3.4 (9 ratings) Prep: 15 min Cook: 18 min Serves 2 Mediterranean cuisine 420 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 400°F (200°C). Pat chicken thighs dry with paper towels, then season evenly with 1/2 tsp sea salt and 1/4 tsp black pepper.
  2. Step 2: Heat 1 tbsp avocado oil in a large oven-safe skillet over medium-high heat until shimmering. Sear chicken thighs for 3-4 minutes per side until golden brown, then transfer skillet to oven.
  3. Step 3: Add 2 tbsp avocado oil, minced garlic, and asparagus to the skillet around the chicken. Roast for 15-18 minutes until chicken reaches 165°F (74°C) internally and asparagus is tender-crisp.
  4. Step 4: Remove skillet from oven. Stir Dijon mustard, lemon juice, and chopped thyme into the pan juices. Spoon sauce over chicken and asparagus, ensuring even coating.
  5. Step 5: Let rest for 3 minutes before serving to allow juices to redistribute.

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Frequently asked questions

How long does Lemon-Herb Creamy Mustard Chicken with Asparagus take to make?

Total time is about 33 minutes (15 min prep + 18 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Lemon-Herb Creamy Mustard Chicken with Asparagus?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep boneless chicken thighs from drying out.

Can I substitute ingredients in Lemon-Herb Creamy Mustard Chicken with Asparagus?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Lemon-Herb Creamy Mustard Chicken with Asparagus for a different number of people?

The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Lemon-Herb Creamy Mustard Chicken with Asparagus whole30?

Yes — this recipe is tagged whole30, keto based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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