How to Cook Chicken Breast

Dry, rubbery chicken breast is the cliché of diet food — and entirely avoidable. The problem isn't the ingredient; it's the technique. Chicken breast is extremely lean (and therefore unforgiving of overcooking), but cooked correctly it's genuinely good food that holds up through the week in meal prep.

Why Chicken Breast Gets Dry

Chicken breast has very little fat to provide moisture during cooking. Fat is the buffer that allows other protein sources (thigh, salmon, beef) to tolerate higher temperatures without becoming chalky. Breast has no such protection — overcooking even slightly squeezes out moisture and tightens the protein fibres into an unpleasant texture.

The target internal temperature is 74°C (165°F). Nothing above this is required for food safety or palatability. Going to 85°C+ is what produces dry chicken.

A meat thermometer costs £8–12 and is the single most useful tool for cooking chicken correctly. If you're meal prepping chicken consistently, it pays for itself in reduced waste.

Method 1: Oven Baking (Best for Batch Prep)

Best for: Large batches, hands-off cooking while preparing other components.

1. Preheat oven to 190°C fan
2. Season chicken breasts (see seasoning guide)
3. If breasts are thick (over 2.5cm), slice them in half horizontally or pound to even thickness
4. Place in a roasting dish with a splash of water, chicken stock, or oil to create some steam
5. Cover loosely with foil for the first two-thirds of cooking time
6. Cook 20–25 minutes for medium breasts (150–180g); 25–30 minutes for large (200–250g)
7. Check internal temperature reaches 74°C; rest for 3–5 minutes before slicing

Method 2: Poaching (Best for Versatility)

Best for: Chicken that will be used shredded — in salads, wraps, stir-fries, or pasta dishes.

1. Place chicken breasts in a saucepan with cold water or stock to just cover
2. Add aromatics: halved garlic cloves, a bay leaf, peppercorns, herbs (thyme, rosemary)
3. Bring to the boil, then immediately reduce to a very gentle simmer (barely bubbling)
4. Cook 15–18 minutes for medium breasts; 20–22 for large
5. Remove and allow to rest in the liquid for 5 minutes before removing
6. Shred or slice immediately while warm — it's much easier at this stage

Poached chicken retains the most moisture and the poaching liquid can be used as a light stock.

Method 3: Pan-Cooking (Fastest, Best for Individual Portions)

Best for: Single servings, when you want some colour and caramelisation on the surface.

1. Slice breast to approximately 1.5–2cm thickness (butterfly or slice)
2. Season well and add 1 tsp of olive oil to a non-stick pan
3. Heat pan to medium-high; the oil should shimmer before the chicken goes in
4. Cook 3–4 minutes on the first side without moving it (allow crust to form)
5. Flip and cook a further 3–4 minutes
6. Rest on a board for 2 minutes before slicing

Macro Reference (per 100g cooked)

• Calories: approximately 165 kcal
• Protein: 31g
• Fat: 3.6g
• Carbohydrates: 0g

These figures vary slightly based on cooking method and whether any oil is used.

Key Takeaways

• Chicken breast dries out because it has minimal fat — internal temperature of 74°C is the target, not higher
• A meat thermometer removes guesswork and prevents both undercooked and overcooked chicken
• Brining for 30 minutes to 2 hours significantly improves moisture retention in batch prep
• Oven baking is best for batches; poaching is best for shredded chicken; pan-cooking is fastest for single servings
• Rest cooked chicken 2–5 minutes before slicing — cutting immediately releases trapped moisture
• Take chicken out of the fridge 15–20 minutes before cooking for even results