Quick Recipe Version (TL;DR)
Quick Ingredients
- 4 tbsp (57 g) unsalted butter
- 1 medium yellow onion, diced (about 1 1/2 cups)
- 2 cloves garlic, minced
- 1/3 cup (40 g) all-purpose flour
- 2 1/2 cups (600 ml) low-sodium chicken broth
- 1 cup (240 ml) whole milk or half-and-half
- 1 tsp kosher salt, plus more to taste
- 1/2 tsp black pepper
- 1 tsp dried thyme
- 1/4 tsp rubbed sage (optional)
- 3 cups cooked shredded chicken
- 3 cups frozen mixed vegetables
- 2 tbsp chopped parsley (optional)
- 2 cups (250 g) all-purpose flour (biscuits)
- 1 tbsp baking powder (biscuits)
- 1/2 tsp baking soda (biscuits)
- 1 tsp kosher salt (biscuits)
- 1 tbsp granulated sugar (biscuits)
- 8 tbsp (113 g) cold unsalted butter, cubed (biscuits)
- 1 cup (240 ml) cold buttermilk (biscuits)
- 1 large egg + 1 tbsp water (egg wash, optional)
Do This
- 1) Heat oven to 425°F (220°C). Butter a 9 x 13-inch (3-quart) casserole dish.
- 2) Make the gravy: sauté onion/garlic in 4 tbsp butter, whisk in flour, then whisk in broth + milk and simmer until thick.
- 3) Stir in chicken, frozen mixed veg, seasonings, and parsley; pour into casserole.
- 4) Mix biscuits: whisk dry ingredients, cut in cold butter, stir in buttermilk; fold and cut 6 large biscuits.
- 5) Set biscuits on top of hot filling; brush with egg wash (optional).
- 6) Bake 22–26 minutes until biscuits are deep golden and filling is bubbling around the edges.
- 7) Rest 10 minutes before serving so the gravy thickens slightly.
Why You’ll Love This Recipe
- It’s true comfort food: creamy chicken-and-veg filling with big, buttery biscuits baked right on top.
- The biscuits turn crisp and golden on top, but stay tender where they meet the gravy.
- Uses freezer-friendly mixed vegetables and leftover or rotisserie chicken for easy prep.
- Everything bakes in one casserole dish, so cleanup is simple.
Grocery List
- Produce: 1 medium yellow onion, 2 cloves garlic, fresh parsley (optional)
- Dairy: unsalted butter, whole milk or half-and-half, buttermilk, 1 large egg (optional for egg wash)
- Meat: cooked chicken (rotisserie, leftover, or poached)
- Frozen: mixed vegetables (peas/carrots/corn/green beans style)
- Pantry: all-purpose flour, baking powder, baking soda, granulated sugar, chicken broth (low-sodium), kosher salt, black pepper, dried thyme, rubbed sage (optional)
Full Ingredients
For the Creamy Chicken & Veg Filling
- 4 tbsp (57 g) unsalted butter, plus 1 tbsp butter for greasing the dish
- 1 medium yellow onion, diced (about 1 1/2 cups)
- 2 cloves garlic, minced
- 1/3 cup (40 g) all-purpose flour
- 2 1/2 cups (600 ml) low-sodium chicken broth
- 1 cup (240 ml) whole milk or half-and-half
- 1 tsp kosher salt, plus more to taste
- 1/2 tsp freshly ground black pepper
- 1 tsp dried thyme (or 1 tbsp chopped fresh thyme)
- 1/4 tsp rubbed sage (optional, but very “farmhouse”)
- 3 cups cooked shredded or chopped chicken (about 1 1/2 lb / 680 g cooked)
- 3 cups (about 420 g) frozen mixed vegetables (no need to thaw)
- 2 tbsp chopped fresh parsley (optional)
For the Big Buttery Biscuit Topping
- 2 cups (250 g) all-purpose flour, plus more for shaping
- 1 tbsp baking powder
- 1/2 tsp baking soda
- 1 tsp kosher salt
- 1 tbsp granulated sugar
- 8 tbsp (113 g) cold unsalted butter, cut into 1/2-inch cubes
- 1 cup (240 ml) cold buttermilk
Optional Finish
- 1 large egg + 1 tbsp water, whisked (egg wash for extra shine and browning)
- 1 tbsp melted butter to brush biscuits after baking (for extra buttery tops)
- Flaky salt, to sprinkle on the biscuits (optional)
Step-by-Step Instructions
Step 1: Preheat the oven and prep the casserole dish
Arrange a rack in the middle of the oven and preheat to 425°F (220°C).
Grease a 9 x 13-inch (3-quart) casserole dish with 1 tbsp butter. Set it on a rimmed baking sheet (helpful insurance in case it bubbles over).
Step 2: Sauté the aromatics for a savory base
In a large skillet or Dutch oven over medium heat, melt 4 tbsp (57 g) butter.
Add the diced onion and cook, stirring occasionally, until softened and lightly translucent, 5–7 minutes. Add the minced garlic and cook 30 seconds, just until fragrant.
Step 3: Make the creamy gravy (roux + simmer)
Sprinkle in the 1/3 cup (40 g) flour. Stir constantly for 1 minute to cook out the raw flour taste. You should have a thick, paste-like roux coating the onions.
Slowly whisk in the 2 1/2 cups (600 ml) chicken broth, a splash at a time at first, whisking smooth before adding more. Whisk in the 1 cup (240 ml) milk or half-and-half.
Add 1 tsp kosher salt, 1/2 tsp black pepper, 1 tsp thyme, and 1/4 tsp rubbed sage (if using). Bring to a gentle simmer and cook, stirring often, until the gravy thickens to a creamy, spoon-coating consistency, 4–6 minutes.
Step 4: Add chicken and vegetables, then assemble the filling
Stir in the 3 cups cooked chicken and 3 cups frozen mixed vegetables. Keep stirring until everything is evenly coated and the mixture is hot again, 2–3 minutes. Taste and add more salt and pepper if needed.
Stir in the 2 tbsp chopped parsley (if using). Scrape the filling into the prepared casserole dish and spread into an even layer.
Step 5: Make the biscuit dough (tender inside, crisp on top)
In a large mixing bowl, whisk together 2 cups (250 g) flour, 1 tbsp baking powder, 1/2 tsp baking soda, 1 tsp kosher salt, and 1 tbsp sugar.
Add the cold cubed butter. Using a pastry cutter or your fingertips, cut the butter into the flour until you have a mix of pea-size pieces and smaller sandy bits (those butter pockets make flaky layers).
Pour in 1 cup (240 ml) cold buttermilk. Stir gently with a fork just until the dough comes together and no dry flour remains. Do not overmix.
Step 6: Shape big biscuits and top the casserole
Lightly flour a countertop and turn out the dough. Pat it into a rectangle about 3/4 inch thick. Fold it in half, then pat it back down; repeat this folding process 2 more times to create layers (still working gently).
Pat to a final thickness of about 1 inch. Cut 6 large biscuits using a 2 3/4 to 3-inch biscuit cutter. Press straight down (don’t twist) so the biscuits rise well.
Place the biscuits on top of the hot filling, spaced evenly. It’s okay if the edges touch; that helps keep the sides tender where they meet the gravy.
If using egg wash, brush the tops lightly with the egg + water mixture.
Step 7: Bake until the biscuits are golden and the filling bubbles
Bake at 425°F (220°C) until the biscuits are deep golden brown and the filling is bubbling around the edges, 22–26 minutes.
If you want to be extra sure the biscuits are baked through, check the center biscuit with an instant-read thermometer; aim for about 200°F (93°C).
Optional finish: brush the hot biscuits with 1 tbsp melted butter and sprinkle lightly with flaky salt.
Step 8: Rest briefly, then serve
Let the casserole rest 10 minutes before serving. This helps the gravy set up slightly so you get perfect, creamy scoops.
Spoon out a portion of filling and top with a biscuit (or split the biscuit and tuck some gravy inside).
Pro Tips
- Keep biscuit ingredients cold. Cold butter and cold buttermilk make the most tender, flaky biscuits with crisp tops.
- Make it thicker or thinner on purpose. For a thicker potpie-style gravy, simmer the sauce an extra 1–2 minutes before adding chicken and veg. For a looser “stew” vibe, add an extra 1/4 cup (60 ml) broth.
- Use low-sodium broth. Chicken and biscuits can get salty fast; low-sodium broth lets you season precisely.
- Cut big biscuits. Six large biscuits give that classic “farmhouse” look and ensure the tops brown before the filling over-reduces.
- Prevent a soggy underside. Assemble the biscuits over hot filling and bake immediately; that jump-starts steam and helps the biscuit bottoms cook through.
Variations
- Turkey potpie biscuits: Swap in 3 cups cooked turkey (great for leftovers). Add a pinch of poultry seasoning if you like.
- Extra-vegetable version: Add 1 cup diced mushrooms (sauté with the onion) or stir in 2 cups fresh baby spinach at the end (it wilts fast).
- Cheddar-herb biscuits: Add 1 cup (100 g) shredded sharp cheddar and 1 tbsp chopped chives to the biscuit dough; reduce biscuit salt to 3/4 tsp.
Storage & Make-Ahead
Refrigerate: Store covered in the refrigerator for up to 4 days. Reheat in a 350°F (175°C) oven for 20–25 minutes (best for re-crisping biscuits) or microwave individual portions until hot.
Make-ahead option: Prepare the filling up to 2 days ahead and refrigerate. When ready to bake, warm the filling on the stove until steaming (or bake the filling alone at 425°F for 10 minutes), then top with freshly made biscuits and bake as directed.
Freezing: For best texture, freeze the filling (without biscuits) in an airtight container for up to 3 months. Thaw overnight in the fridge, reheat until hot, then top with fresh biscuits and bake.
Nutrition (per serving)
Approximate, based on 6 servings: 650 calories, 33 g protein, 52 g carbohydrates, 34 g fat, 12 g saturated fat, 6 g fiber, 1100 mg sodium.
