Chicken Biscuit Casserole

Ingredients

• 42 g (3 Tbsp)salted butter
• 2 stalkscelery, diced
• 40 g (5 Tbsp)plain flour
• 240 ml (1 cup)chicken stock
• 240 ml (1 cup)milk
• ½ tspsalt
• ⅛ tspblack pepper
• 1 Tbspdried minced onion
• ¼ tspdried thyme
• ½ tspgarlic powder
• About 560 g (4 cups)cooked chicken, chopped
• About 300 g (2 cups)frozen mixed vegetables
• 125 g (1 cup)plain flour
• 1 tspbaking powder
• ¼ tspbicarbonate of soda
• ½ tspsugar
• ¼ tsp, heapedsalt
• 120 ml (½ cup), very coldbuttermilk
• 57 g (¼ cup), melted and cooled slightlysalted butter

Instructions

1. 1

   Prepare the dish

   Dice the celery and chop the cooked chicken. Spray a 2.4–2.8 litre (2½–3-quart) casserole dish with cooking spray and heat the oven to 200°C (400°F).

2. 2

   Cook the celery

   For the filling, melt the butter in a large frying pan over a medium-low heat. Add the celery and sauté until crisp-tender.

3. 3

   Thicken the sauce

   Whisk the flour into the butter until fully absorbed. Whisk in the stock and milk, raise the heat to medium and cook, stirring, until the mixture boils. Keep it boiling and stirring for at least 1 minute.

4. 4

   Add filling ingredients

   Stir in the seasonings, chicken and vegetables until combined. Reduce the heat to its lowest setting while you prepare the biscuits.

5. 5

   Mix biscuit dough

   For the biscuits, whisk the flour, baking powder, bicarbonate of soda, sugar and salt in a mixing bowl. Pour the cold buttermilk into a 240 ml (1-cup) measuring jug and stir in the melted butter; it will form small solid pieces.

6. 6

   Shape the biscuits

   Pour the liquid over the dry ingredients and stir gently. Pat the dough out on a floured surface to about 1.3 cm (½ inch) thick, then cut out circles with a biscuit cutter.

7. 7

   Top the filling

   Pour the hot filling into the prepared dish and arrange the biscuits over it. Use any dough scraps to fill gaps between the biscuits if you like.

8. 8

   Bake until golden

   Bake at 200°C (400°F) for about 30 minutes, until the filling is bubbling and the biscuits are golden brown.

What is chicken biscuit casserole?

This American-style casserole layers cooked chicken and vegetables in a creamy sauce beneath a biscuit topping. It brings together the comforting, gravy-like filling of a pot pie and the soft, risen texture of savoury biscuits.

Here, the biscuits are made from scratch with buttermilk and butter. Baking them directly on the hot filling gives you a substantial topping without needing pastry.

Nutrition and macros by portion

The nutrition label shows one serving as written: 342 calories, 23g protein, 25g carbs, 17g fat.

The chicken supplies much of the protein, while the flour, vegetables and milk contribute carbohydrates. Butter, milk and buttermilk provide much of the fat. Pair a portion with extra greens or salad to add freshness and round out the plate.

Build a smooth filling

Celery first: sauté it in butter until crisp-tender, so it softens in the oven without losing all its texture.

Flour next: whisk it into the butter before adding the stock and milk. Stirring as the sauce heats helps it thicken evenly; the brief boil cooks out the raw flour taste.

Chicken and vegetables: use cooked chicken and add the frozen vegetables straight to the pan. They warm through as the casserole bakes.

Keep the biscuit dough tender

Cold buttermilk: stir it together with the melted, slightly cooled butter. The butter will set into small pieces, which is expected.

Gentle mixing: combine the wet and dry ingredients only until they come together. Pat the dough rather than kneading it, then cut the biscuits from a layer about 1.3 cm thick.

Check the bake

The casserole is ready when the filling bubbles around the biscuits and their tops are golden brown. The recipe gives about 30 minutes in a 200°C oven, but use those visual cues as well as the time.

If the biscuit tops colour before the filling is bubbling, cover the dish loosely with foil for the remaining bake.

Choose a suitable dish

The recipe calls for a 2.4–2.8 litre casserole dish. A dish close to that capacity helps keep the filling at a depth that the biscuits can bake over evenly.

Set the dish on a baking tray if you are concerned about bubbling filling spilling over in the oven.

Serve it with something fresh

The chicken, vegetables and biscuit topping make this a complete-feeling main course. Serve it hot, with a crisp green salad or steamed greens for a fresh contrast.

Let portions settle briefly after baking so the creamy filling is easier to spoon out beneath the biscuits.

Recipe notes & tips

• Chop the chicken into bite-sized pieces so it is easy to serve with the sauce.
• Measure the flour for the sauce and biscuits separately before you start.
• Keep the buttermilk cold until you are ready to mix the biscuit dough.
• Flour the work surface lightly to make the biscuit dough easier to pat and cut.
• Arrange biscuits with a little space between them so steam can escape as they bake.
• Rest the casserole briefly before serving to make portioning tidier.

Variations

• Use leftover turkey: swap it for the cooked chicken in the same amount.
• Change the vegetables: use another frozen vegetable mix in place of the mixed vegetables.
• Add fresh herbs: stir chopped parsley into the filling before topping it.
• Make smaller biscuits: cut the dough into smaller rounds and check for golden tops during baking.
• Add a little heat: season the filling with a pinch of cayenne before adding the chicken.

Common mistakes to avoid

• Lumpy sauce: whisk the flour into the butter first, then add the stock and milk gradually while stirring.
• Overmixed biscuit dough: stir only until combined, then pat it out without kneading.
• Warm buttermilk: use it very cold so the butter forms the small pieces described in the method.
• Biscuits too thick: pat the dough to about 1.3 cm so the rounds bake through over the filling.
• Pale topping: bake until the biscuit tops are golden and the filling is bubbling.
• Filling spills over: use a 2.4–2.8 litre dish and place it on a baking tray if needed.

How to store

Refrigerate leftovers in a covered container for up to 3 days. Reheat portions in the oven until piping hot; the biscuit topping may soften after storage.

Frequently asked questions