Recipes and nutrition
5 Quick High-Protein Recipes to Use Up Leftovers
Leftover protein is a head start you have already paid for. The chicken from Sunday, the salmon fillet you did not finish, a few boiled eggs sitting in the fridge: each is most of a meal already done, which matters a lot on the days when cooking from scratch feels like too much.
These five recipes each build a quick, high-protein meal around a common leftover. They are single-serving, ready in around ten minutes, and lead with protein to support muscle and keep you satisfied on a smaller appetite. Use whatever you have, and treat the amounts as a guide rather than a rule.
A quick food-safety note that runs through all of these: cool cooked food and get it into the fridge within two hours, use it within two to three days, and reheat until piping hot all the way through. Do not reheat the same leftovers more than once.
1. Leftover Roast Chicken and Avocado Bowl
Ingredients
- 120 g leftover roast chicken, shredded
- Half an avocado, sliced
- Large handful of spinach or mixed leaves
- Cherry tomatoes, halved
- 1 tbsp Greek yogurt mixed with a squeeze of lemon and a pinch of salt
- Walnut oil to finish (optional)
Method
- Pile the leaves into a bowl and scatter over the tomatoes.
- Add the shredded chicken and sliced avocado.
- Spoon over the lemon yogurt, add a light drizzle of walnut oil, and season.
Chicken carries most of the protein here. Add a few cooked lentils or a boiled egg if you want to push it higher.
2. Flaked Salmon and Egg Scramble
Ingredients
- 80 g leftover cooked salmon, flaked
- 2 large eggs, beaten
- Handful of spinach
- 1 tsp avocado oil
- Chives or spring onion, chopped
- Salt and black pepper
Method
- Warm the avocado oil in a non-stick pan over medium heat and wilt the spinach for a minute.
- Pour in the beaten eggs and stir gently as they set.
- Fold through the flaked salmon just to warm it, then finish with chives and season.
Fold the salmon in at the end so it warms without drying out. Avocado oil handles the heat well.
3. Leftover Beef and Broccoli Stir-Fry
Ingredients
- 120 g leftover cooked beef (roast or steak), sliced thin
- 150 g broccoli florets
- 1 tsp avocado oil
- 1 garlic clove, sliced
- 1 tbsp soy sauce or tamari
- 1 tsp grated ginger (optional)
Method
- Heat the avocado oil in a pan or wok over high heat and add the broccoli with a splash of water. Cover for two minutes to steam.
- Add the garlic and ginger, then the sliced beef, and toss for a minute just to heat through.
- Add the soy sauce, toss once more, and serve.
The beef is already cooked, so it only needs warming. Keep the heat high and the time short to keep it tender.
4. Egg and Cottage Cheese Protein Toast
Ingredients
- 2 leftover hard-boiled eggs, sliced
- 1 slice wholegrain or sourdough toast
- 3 tbsp cottage cheese
- Cracked black pepper and chilli flakes
- Fresh herbs if you have them
Method
- Toast the bread and spread the cottage cheese over it.
- Lay the sliced eggs on top.
- Finish with black pepper, a pinch of chilli flakes, and herbs.
Cottage cheese and eggs together stack the protein without much effort. A genuinely fast option for a low-energy day.
5. Lentil, Feta and Herb Bowl
Ingredients
- 150 g leftover cooked lentils (or a drained tin)
- 40 g feta, crumbled
- Cucumber and cherry tomatoes, chopped
- Handful of parsley or mint, chopped
- Juice of half a lemon
- 1 tsp walnut oil to finish
Method
- Tip the lentils into a bowl and add the chopped cucumber and tomatoes.
- Fold through the herbs, lemon juice, and a drizzle of walnut oil.
- Scatter the feta over the top and season.
A plant-forward option, though the feta lifts both protein and flavour. Add leftover chicken if you want it heartier.
Frequently asked questions
Are leftovers safe to eat on GLP-1 medication?
Yes. Store cooked leftovers in the fridge within two hours, use them within two to three days, and reheat until piping hot throughout. This is standard food safety and applies whether or not you take GLP-1 medication.
How do I keep a leftover meal high in protein?
Build the meal around the protein you already cooked, then add vegetables and a little healthy fat rather than bulking it out with carbohydrate. That keeps the protein-to-calorie ratio high, which suits a smaller appetite well.
Can I make these with plant-based proteins?
Yes. Leftover tofu, tempeh, beans, or lentils swap straight into most of these recipes. The lentil bowl is already plant-based, and the others adapt easily by replacing the meat or fish.
Are the nutrition figures exact?
No, they are estimates and depend on your exact portions and brands. Use them as a guide. If you have specific nutrition targets, your healthcare professional or prescribing clinician can help you tailor them.
Make every meal work harder
The GLP-1 Method Toolkit gives you protein targets, meal plans, and a shopping list built for a smaller appetite.
Get your toolkit nowNutrition figures are estimates and vary by portion and brand. This article is general information and not medical advice. For guidance specific to your situation, speak with your healthcare professional or prescribing clinician.
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