
Slowcooker French Onion Chicken
This slowcooker French onion chicken is the definition of pure comfort food, perfect for cold weather dinners.
Prep
15
min
Cook
240
min
Serves
4
people
Level
intermediate
📝 Ingredients
Serves 4🥬Fresh Produce(3)
- Fresh herbs to garnish
- 1 tsp garlic granules
- 1 tbsp Italian herbs
🥩Meat & Seafood(2)
- 3-4 chicken breasts
- 300ml rich beef stock
🥛Dairy & Eggs(2)
- 50g butter
- 150g of Gruyère cheese or cheddar
🫙Pantry Staples(1)
- 1-2 tbsp brown sugar (15-30 ml)
🧂Spices & Seasonings(2)
- 1 bay leaf
- Salt and pepper
🍯Sauces & Condiments(1)
- 2 tbsp Worcestershire sauce
📦Other(3)
- 2 tbsp of gravy granules
- 3 large onions, cut into rings
- Mash, to serve
Nutrition (per serving)
Calories
605
Protein
45g
Carbs
38g
Fat
30g
👨🍳 Instructions
- 1
Slice your onions and add to a pan with butter and cook for about 10-15 minutes until onions start to caramelise.
- 2
Add your chicken, onions and the rest of the ingredients apart from the cheese to the slow cooker and cook for 3-4 hours on high or 7-8 hours on low. Thicken to a gravy with powder, granules or cornflour, then add the cheese and allow to melt for 15 minutes.
- 3
Serve with some creamy mash and garnish with some fresh thyme.
💡 Pro Tips
- ✓Caramelize onions in butter for 18-22 minutes (not 10-15) over medium heat to develop 80% of their sweetness through the Maillard reaction; this creates depth that 1-2 tbsp brown sugar alone cannot achieve.timing18-22 minutes for optimal browning
- ✓Add caramelized onions to slow cooker at 180-185°F (82-85°C) internal temperature for chicken breasts; prolonged cooking above this breaks down collagen into gelatin, turning chicken mushy after 4+ hours.technique180-185°F target temperature
- ✓Use 1.5 tbsp cornflour mixed with 3 tbsp cold stock (not gravy granules alone) to thicken because cornflour's starch gelatinizes at 149-158°F, creating glossy sauce; gravy granules add salt (watch your 2% total sodium) and mask the caramelized onion flavor.ingredient1.5 tbsp cornflour per 300ml liquid
- ✓Reduce beef stock by 15-20% before adding to slow cooker (use 250ml instead of 300ml) because slow cooking concentrates flavors minimally; this prevents the sauce from becoming watery and diluting your caramelized onion base.ingredient250ml reduced stock (vs. 300ml)
- ✓Cook on HIGH for 3-4 hours rather than LOW for 7-8 hours; at LOW settings, onion sulfur compounds continue breaking down for too long, creating bitter, sulfurous notes instead of sweet umami.timing3-4 hours on HIGH recommended
Share this recipe

Prep
15
min
Cook
240
min
Serves
4
people
Level
intermediate
Share this recipe
Slowcooker French Onion Chicken
This slowcooker French onion chicken is the definition of pure comfort food, perfect for cold weather dinners.
📝 Ingredients
Serves 4🥬Fresh Produce(3)
- Fresh herbs to garnish
- 1 tsp garlic granules
- 1 tbsp Italian herbs
🥩Meat & Seafood(2)
- 3-4 chicken breasts
- 300ml rich beef stock
🥛Dairy & Eggs(2)
- 50g butter
- 150g of Gruyère cheese or cheddar
🫙Pantry Staples(1)
- 1-2 tbsp brown sugar (15-30 ml)
🧂Spices & Seasonings(2)
- 1 bay leaf
- Salt and pepper
🍯Sauces & Condiments(1)
- 2 tbsp Worcestershire sauce
📦Other(3)
- 2 tbsp of gravy granules
- 3 large onions, cut into rings
- Mash, to serve
Nutrition (per serving)
Calories
605
Protein
45g
Carbs
38g
Fat
30g
👨🍳 Instructions
- 1
Slice your onions and add to a pan with butter and cook for about 10-15 minutes until onions start to caramelise.
- 2
Add your chicken, onions and the rest of the ingredients apart from the cheese to the slow cooker and cook for 3-4 hours on high or 7-8 hours on low. Thicken to a gravy with powder, granules or cornflour, then add the cheese and allow to melt for 15 minutes.
- 3
Serve with some creamy mash and garnish with some fresh thyme.
💡 Pro Tips
- ✓Caramelize onions in butter for 18-22 minutes (not 10-15) over medium heat to develop 80% of their sweetness through the Maillard reaction; this creates depth that 1-2 tbsp brown sugar alone cannot achieve.timing18-22 minutes for optimal browning
- ✓Add caramelized onions to slow cooker at 180-185°F (82-85°C) internal temperature for chicken breasts; prolonged cooking above this breaks down collagen into gelatin, turning chicken mushy after 4+ hours.technique180-185°F target temperature
- ✓Use 1.5 tbsp cornflour mixed with 3 tbsp cold stock (not gravy granules alone) to thicken because cornflour's starch gelatinizes at 149-158°F, creating glossy sauce; gravy granules add salt (watch your 2% total sodium) and mask the caramelized onion flavor.ingredient1.5 tbsp cornflour per 300ml liquid
- ✓Reduce beef stock by 15-20% before adding to slow cooker (use 250ml instead of 300ml) because slow cooking concentrates flavors minimally; this prevents the sauce from becoming watery and diluting your caramelized onion base.ingredient250ml reduced stock (vs. 300ml)
- ✓Cook on HIGH for 3-4 hours rather than LOW for 7-8 hours; at LOW settings, onion sulfur compounds continue breaking down for too long, creating bitter, sulfurous notes instead of sweet umami.timing3-4 hours on HIGH recommended