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Chicken in Puff Pastry with Mu

By Ruby Caldwell | April 21, 2026
Chicken in Puff Pastry with Mu

Why you'll love this recipe

  • 30‑minute dinner that feels restaurant‑level
  • Crowd‑pleaser with flaky pastry and creamy sauce
  • Make‑ahead friendly for busy weeknights
  • Kid‑approved thanks to mild mustard flavor
  • Freezer‑friendly for meal‑prep enthusiasts

I first met this dish at my aunt’s Parisian‑inspired brunch, when the kitchen was filled with the scent of butter‑laden pastry and the clink of fine china. Watching the golden parcels emerge from the oven made me realize I could bring that restaurant feeling home. I tweaked the sauce until it sang, and the recipe has been a family favorite ever since.

The first time I served it at a friends‑only dinner, the room fell silent as the first bite was taken—crack, buttery puff, then the creamy mustard sauce melting over the chicken. That moment cemented the dish as my go‑to for impressing guests without spending hours in the kitchen.

The story

The oven hums as the puff pastry lifts, releasing a buttery, caramel‑gold fragrance that mingles with the sharp snap of mustard. A sizzle erupts when the seared chicken hits the hot pan, promising a juicy interior. One bite delivers crisp layers that melt into a velvety, tangy sauce.

I first discovered this dish at my aunt’s Parisian‑inspired brunch, when the kitchen was filled with the scent of butter‑laden pastry and the clink of fine china. Watching the golden parcels emerge from the oven made me realize I could bring that restaurant feeling home. I tweaked the sauce until it sang, and the recipe has been a family favorite ever since.

What sets this version apart is the double‑seal technique: after searing, the chicken is wrapped tightly in chilled puff pastry, then brushed with a quick egg wash for a glossy finish. The sauce incorporates both Dijon and whole‑grain mustard, giving depth without overwhelming heat. Together they create a balance of texture and flavor you rarely find in quick weeknight meals.

The palate experiences a savory, buttery crunch first, followed by the tender, juicy chicken core. The mustard‑cream sauce adds a tangy, slightly sweet umami that cuts through the richness, while thyme lends an earthy perfume. Each mouthful is a harmonious play of crisp, creamy, and aromatic notes.

Picture this on a rustic wooden board: two golden parcels beside a bright arugula salad, a loaf of crusty sourdough ready to soak up sauce, and a chilled glass of Chardonnay. It works as a dazzling centerpiece for a small dinner party or a comforting solo treat after a long day. The dish also holds up well for make‑ahead lunches.

Don’t let the puff pastry intimidate you; the sheet is already rolled and only needs a quick cut. The total hands‑on time is under 20 minutes, and the oven does the heavy lifting. With a few simple steps you’ll achieve a restaurant‑level result without a pastry chef’s apprenticeship.

I’ve baked this twice for my kids, and they devoured every flaky bite while begging for seconds. After testing variations with different mustards and herbs, I’m confident the technique is foolproof. So preheat that oven, and let’s get cooking!

Why This Recipe Works

  • Searing the chicken first creates a flavorful crust and locks in juices.
  • Wrapping in chilled puff pastry ensures steam creates lift for a flaky exterior.
  • Gentle simmer of cream and mustard emulsifies into a stable, velvety sauce.

Ingredient notes & substitutions

Boneless, skinless chicken breasts

Provides lean protein and stays juicy when seared; choose plump breasts for even cooking.

bone‑in, skinless thighs

Puff pastry

Creates a light, buttery crust that puffs up in the oven; use all‑butter sheets for best lift.

store‑bought phyllo sheets (layered)

Heavy cream

Adds richness and helps the sauce thicken without curdling.

half‑and‑half (will be less thick)

Dijon mustard

Gives sharp, tangy heat that balances the cream.

spicy whole‑grain mustard

Fresh thyme leaves

Imparts an earthy aroma that brightens the sauce.

dried thyme (½ tsp)

Butter

Provides a silky base for the sauce and helps brown the garlic.

margarine or ghee

Equipment you'll need

Parchment paperRolling pinPastry brush

Ingredients

  • 2 boneless, skinless chicken breasts
  • Salt and pepper to taste
  • 1 tablespoon olive oil
  • 1 sheet puff pastry (thawed if frozen)
  • 1 egg (beaten, for egg wash)
  • 1 tablespoon butter
  • 2 garlic cloves (minced)
  • 1/2 cup chicken broth
  • 1/2 cup heavy cream
  • 2 tablespoons Dijon mustard
  • 1 teaspoon whole grain mustard (optional)
  • 1 teaspoon fresh thyme leaves or 1/2 teaspoon dried thyme

Before You Start

  • Preheat oven to 400°F
  • Line baking sheet with parchment paper
  • Separate egg and beat for wash
  • Mise en place all ingredients

Instructions

  1. 1
    Step 1

    Preheat oven to 400°F (200°C) and line a baking sheet with parchment paper.

  2. 2
    Step 2

    Season chicken breasts with salt and pepper. Sear in olive oil over medium heat until golden brown. Remove and let cool.

  3. 3
    Step 3

    Roll out puff pastry, cut into rectangles. Wrap each chicken breast, seal edges, brush with egg wash, and bake for 25–30 minutes.

  4. 4
    Step 4

    In a saucepan, melt butter, sauté garlic, add chicken broth, cream, mustards, and thyme. Simmer until thickened.

  5. 5
    Step 5

    Drizzle mustard cream sauce over the chicken pastries and enjoy!

Pro tips

Pat chicken dry

Moisture on the surface prevents a good sear; blot with paper towels.

Preheat the oven fully

A hot oven creates steam that lifts the puff pastry quickly.

Seal pastry edges tightly

Press with a fork or your fingertips to avoid leaks during baking.

Brush egg wash quickly

A thin coat gives a glossy golden finish without sogging.

Simmer sauce gently

Low heat prevents the cream from splitting and keeps it velvety.

Rest wrapped chicken 5 minutes

Allows juices to redistribute, keeping the meat tender inside the pastry.

Use a sharp knife for pastry

Clean cuts keep the pastry from tearing and preserve its shape.

Variations to try

Spicy Cajun Twist

Add 1 tsp Cajun seasoning to the sauce and swap Dijon for whole‑grain mustard for extra bite.

Dairy‑Free Version

Replace butter with olive oil and heavy cream with coconut milk; the sauce stays creamy.

Individual Sliders

Cut the pastry into smaller squares and wrap bite‑size chicken pieces; perfect for parties.

Herb‑Infused

Stir in chopped parsley and a splash of white wine into the sauce for a fresh finish.

Serving Suggestions

Serve alongside a crisp arugula salad dressed with lemon vinaigrettePair with buttery garlic‑roasted new potatoesOffer crusty sourdough slices to mop up extra sauceAdd a glass of chilled Chardonnay to complement the mustardFinish with a sprinkle of fresh thyme leaves for aroma

Troubleshooting

Sauce separates

Remove from heat and whisk in a splash of cold cream slowly.

Pastry soggy

Bake on a preheated stone or pizza steel; avoid covering with foil.

Chicken undercooked

Use a meat thermometer; ensure internal temperature reaches 165°F before wrapping or add extra bake minutes.

Storage & make-ahead

Refrigerator

Cool to room temperature, then store in an airtight container; keep for up to 3 days.

Freezer

Freeze wrapped pastries on a tray, then bag; lasts 2 months. Thaw overnight in the fridge before reheating.

Best way to reheat

Reheat in a 350°F oven for 15‑20 minutes, uncovered, to re‑crisp the pastry and warm the sauce.

Make-ahead

Assemble the pastry‑wrapped chicken and sauce the day before; keep pastry refrigerated uncovered to avoid sogginess, bake just before serving.

Recipe card
Chicken in Puff Pastry with Mu

Chicken in Puff Pastry with Mu

French-InspiredMain Course
★★★★★ Rate this recipe
Prep time20 min
Cook time30 min
Total time50 min
Pin Recipe
Servings 2

Ingredients

  • 2 boneless, skinless chicken breasts
  • Salt and pepper to taste
  • 1 tablespoon olive oil
  • 1 sheet puff pastry (thawed if frozen)
  • 1 egg (beaten, for egg wash)
  • 1 tablespoon butter
  • 2 garlic cloves (minced)
  • 1/2 cup chicken broth
  • 1/2 cup heavy cream
  • 2 tablespoons Dijon mustard
  • 1 teaspoon whole grain mustard (optional)
  • 1 teaspoon fresh thyme leaves or 1/2 teaspoon dried thyme

Instructions

  1. 1Preheat oven to 400°F (200°C) and line a baking sheet with parchment paper.
  2. 2Season chicken breasts with salt and pepper. Sear in olive oil over medium heat until golden brown. Remove and let cool.
  3. 3Roll out puff pastry, cut into rectangles. Wrap each chicken breast, seal edges, brush with egg wash, and bake for 25–30 minutes.
  4. 4In a saucepan, melt butter, sauté garlic, add chicken broth, cream, mustards, and thyme. Simmer until thickened.
  5. 5Drizzle mustard cream sauce over the chicken pastries and enjoy!

Frequently asked questions

Can I freeze the assembled pastry before baking?
Yes, freeze the wrapped chicken on a sheet, then transfer to a bag; bake from frozen adding 5‑10 minutes to the bake time.
Is there a gluten‑free alternative?
Use a gluten‑free puff pastry or replace with a sturdy gluten‑free phyllo dough.
What if the sauce is too thick?
Thin it with a splash of chicken broth or milk, stirring until smooth.
My pastry didn’t puff up—why?
The oven may not have been hot enough or the pastry was too cold; let it sit at room temperature before baking.
Can I use bone‑in chicken thighs?
Yes, but increase searing time and bake a few minutes longer to ensure the meat is cooked through.
Do I need to brush the pastry with egg wash?
Egg wash creates a glossy, golden crust; you can skip it for a lighter color, but the finish won’t be as shiny.
How many servings does this make?
The recipe yields two generous portions, perfect for a romantic dinner or a small family.
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