Slow Cooker Spaghetti Bolognese

This slow cooker spaghetti Bolognese pairs a rich beef, tomato and bacon sauce with spaghetti for a satisfying family dinner. Brown the meat and vegetables first, then let the slow cooker do most of the work.
Ingredients
- 200 gbacon lardons or diced pancetta
- 1 largecarrot
- 2onions
- 6 clovesgarlic
- 1 tbspolive oil
- 1 kgbeef mince (the recipe recommends frozen mince with 5% fat)
- 180 mlred wine
- 400 mlbeef stock (made with 1 stock pot or 2 stock cubes and boiling water)
- 2 tins (800 g total)chopped tomatoes
- 3 tbsptomato purée
- 2 tbspdried mixed herbs
- 1 tspbalsamic vinegar
- to tastesalt and black pepper
- 1 tspbrown sugar
- 500 gspaghetti
- to tastefresh basil
- to tasteParmesan
Instructions
- 1
Prepare vegetables
Finely dice the carrot and onions. Finely dice or mince the garlic.
- 2
Fry the bacon
Fry the bacon lardons in a pan for about 2 minutes.
- 3
Soften vegetables
Add the diced carrot, onion and garlic to the pan. Fry for about 8 minutes, until softened.
- 4
Transfer vegetables
Move the bacon and softened vegetables from the pan into the slow cooker.
- 5
Brown the mince
Heat the olive oil in the same pan, add the beef mince and cook until just browned.
- 6
Add the wine
Pour the red wine into the pan with the mince, stir well and bring to the boil.
- 7
Add stock
Transfer the mince mixture to the slow cooker and add the beef stock.
- 8
Add sauce ingredients
Add the chopped tomatoes, tomato purée, dried mixed herbs, balsamic vinegar, salt and black pepper, and brown sugar.
- 9
Stir the sauce
Stir all the ingredients together in the slow cooker.
- 10
Slow cook
Put the lid on and cook for 8 hours on low or 6 hours on high. Do not remove the lid during cooking; the sauce does not need stirring.
- 11
Remove the lid
When the cooking time is up, take off the slow cooker lid.
- 12
Cook the spaghetti
Stir the sauce and set the slow cooker to high, leaving the lid off so some liquid can evaporate. Meanwhile, cook the spaghetti according to the packet instructions.
- 13
Serve separately
Serve a scoop of Bolognese sauce over the cooked spaghetti, if you prefer to keep them separate.
- 14
Add the pasta
Alternatively, add the cooked spaghetti to the slow cooker.
- 15
Combine pasta
Stir the spaghetti through the sauce until evenly distributed.
- 16
Add the topping
Serve in bowls topped with grated Parmesan and chopped fresh basil.
What is slow cooker spaghetti Bolognese?
Bolognese is a meat-based tomato sauce commonly served with pasta. This British-style slow cooker version builds flavour by browning bacon and beef with vegetables before simmering them with tomatoes, wine and herbs.
The slow cooker makes the long cooking stage convenient, while spaghetti turns the sauce into a complete, hearty meal. You can serve the sauce over the pasta or mix them together in the pot.
Nutrition and macros by portion
The nutrition label shows one serving as written: 759 calories, 52g protein, 72g carbs, 25g fat.
| Portion | Adjustment | kcal | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| Lighter | More vegetables, less pasta | 531 kcal | 36g | 50g | 18g |
| This serving | As written | 759 kcal | 52g | 72g | 25g |
| Hungry | Larger serving of spaghetti | 1139 kcal | 78g | 108g | 38g |
The spaghetti and tomatoes supply most of the carbohydrates, while the beef and Parmesan contribute protein. Beef, bacon, olive oil and Parmesan account for much of the fat. Pair a serving with green vegetables or salad to add freshness and balance the plate.
Build flavour before slow cooking
Bacon first: Fry the lardons briefly, then soften the diced carrot, onion and garlic in the same pan. This gives the vegetables time to soften before they go into the slow cooker.
Beef and wine: Brown the mince in olive oil, then add the red wine and bring it to the boil. These stovetop steps give the sauce a more developed base before the long, covered cook.
Keep the slow cooker covered
Lid on: Cook the sauce for 8 hours on low or 6 hours on high, without lifting the lid. The recipe specifies that it does not need stirring during this time.
Finish uncovered: Once cooking is complete, remove the lid and turn the cooker to high while you make the spaghetti. This allows some liquid to evaporate before serving.
Check the sauce and pasta
Sauce texture: The final uncovered stage helps the sauce reduce a little. Stir it before serving so the mince and vegetables are distributed through the tomato sauce.
Spaghetti: Cook it according to the packet instructions. Keeping it separate until serving makes it easier to portion; mixing it into the slow cooker gives you a more combined dish.
Choose your serving style
Separate portions: Spoon the sauce over the spaghetti for a familiar presentation and control over how much sauce goes on each serving.
One-pot finish: Stir the cooked spaghetti through the sauce in the slow cooker until evenly coated. Finish either version with grated Parmesan and chopped fresh basil.
Plan ahead and serve
Batch cooking: The recipe description notes that the quantities can be doubled for extra meals. Make sure your slow cooker has room for the larger batch before increasing the ingredients.
On the side: A green salad or cooked green vegetables make a fresh accompaniment to the rich sauce. Serve the pasta hot, with Parmesan and basil added at the table.
Recipe notes & tips
- Dice the carrot and onions finely so they soften evenly in the sauce.
- Use the same pan for the bacon, vegetables and mince to retain the browned flavour left behind.
- Bring the red wine to the boil with the mince before transferring it to the slow cooker.
- Keep the lid closed throughout the slow-cooking stage, as the method specifies.
- Cook the spaghetti while the uncovered sauce finishes reducing.
- Grate the Parmesan and chop the basil just before serving.
Variations
- Use pancetta: Replace the bacon lardons with the listed diced pancetta alternative.
- Add extra vegetables: Include finely diced vegetables alongside the carrot and onion, keeping the original amounts as the base.
- Adjust the herbs: Use a different dried herb mix if you prefer, while keeping the listed quantity.
- Serve with another pasta: Swap spaghetti for another pasta shape and cook it according to its packet instructions.
- Keep pasta separate: Spoon the sauce over each portion rather than mixing it into the slow cooker.
Common mistakes to avoid
- Lifting the lid: Heat escapes during cooking; keep it closed for the full slow-cooking time.
- Skipping the browning: The recipe uses browned bacon and beef for flavour, so complete those pan steps before slow cooking.
- Adding uncooked spaghetti: Cook the pasta separately according to the packet instructions before combining or serving.
- Leaving the sauce covered at the end: Remove the lid and turn the cooker to high for the final reduction stage.
- Overcooking the pasta: Check the packet directions and cook the spaghetti accordingly before adding it to the sauce.
How to store
Cool leftovers promptly and store the sauce and spaghetti in separate airtight containers in the fridge for up to 3 days. Reheat until piping hot, adding a splash of water if the sauce has thickened; cooked pasta can also be reheated with the sauce.
Frequently asked questions
Can I cook this on low or high?
Yes. The method gives a cooking time of 8 hours on low or 6 hours on high. Keep the lid on throughout that stage.
Should I stir the sauce while it cooks?
No. The recipe says the sauce does not need stirring during the slow-cooking time, and the lid should not be removed.
Can I mix the spaghetti into the sauce?
Yes. Cook it first according to the packet instructions, then stir it into the sauce until evenly distributed. You can also serve the sauce over the spaghetti instead.
Can I use pancetta instead of bacon lardons?
Yes. Diced pancetta is given as an alternative to the bacon lardons.
Can I make this ahead or freeze it?
The recipe is described as suitable for batch cooking and freezing. For best texture, store the sauce separately from the cooked spaghetti.
Cook it from the original
This recipe comes from flawlessfood.co.uk. Their page has the author’s own photos, notes and tips — the best place to cook it from.
Open the recipe on flawlessfood.co.uk