Slow Cooker Sausage Casserole (Adam Garratt's Add-Late Trick)

Name: Level up your sausage casserole with one SIMPLE trick
Prep time: 25 min
Cook time: 6 h
Total time: 6 h 25 min
Yield: 4 servings
Ingredients: 8 pork sausages, browned in lard on the hob just before they go into the slow cooker; 1 red onion, peeled and sliced; 3 garlic cloves, finely chopped; 2 bay leaves; lard, for sweating the onion, plus a second knob for browning the sausages; 400 g tinned whole plum tomatoes, crushed by hand; carrots, tin drained, or 3 fresh carrots peeled and sliced; 500 g potatoes, peeled and cut into bite-size chunks, kept in cold water until use; 400 ml chicken or vegetable stock; salt and pepper, to taste, light hand on salt (stock is already salted); red wine (or water), a splash to lift the fond from the sausage pan

Source video by Adam Garratt on YouTube. This recipe was adapted with strict source-fidelity rules and is marked for human review.

A British sausage casserole adapted from Adam Garratt's oven recipe for the slow cooker, with his key trick preserved: the sausages go in late so they keep their meaty texture instead of disintegrating. Red onion, garlic and bay are softened in lard on the hob, joined by hand-crushed plum tomatoes (his preference over chopped), tinned or fresh carrots, diced potatoes and chicken stock, and the lot transfers to the slow cooker for 5 to 6 hours on Low. With about 90 minutes to go, the sausages are browned hard on the hob, the fond is deglazed with a splash of wine or water, and both go in for the final stretch. End result: deep flavour, sausages with bite, no mush.

Slow cooker notes: Original method is a covered 180°C fan oven cook of about 45-60 minutes for the base then 20 minutes with the sausages added. Adapted by sweating the onion-garlic-bay on the hob, then transferring to the slow cooker for 5 to 6 hours on Low. The cook's central rule (sausages brown separately and add late) is fully preserved: brown them on the hob with about 90 minutes left, deglaze the fond with a splash of red wine or water, then nestle them on top for the final stretch.

Ingredients

Main

8pork sausages, browned in lard on the hob just before they go into the slow cooker (add late)

Base

1red onion, peeled and sliced
3garlic cloves, finely chopped
2bay leaves
lard, for sweating the onion, plus a second knob for browning the sausages
400 gtinned whole plum tomatoes, crushed by hand
carrots, tin drained, or 3 fresh carrots peeled and sliced
500 gpotatoes, peeled and cut into bite-size chunks, kept in cold water until use
400 mlchicken or vegetable stock
to taste, light hand on salt (stock is already salted)salt and pepper, to taste, light hand on salt (stock is already salted)

Deglaze

red wine (or water), a splash to lift the fond from the sausage pan (add late)

Method

Melt a small knob of lard in a frying pan over medium heat. Add the sliced red onion and sweat for 10 minutes, then stir in the chopped garlic and bay leaves for 30 seconds.
~11 min
Tip the onion mixture into the slow cooker. Crush the plum tomatoes by hand straight into the pot. Add the carrots, diced potatoes (drained), chicken stock and a little salt and pepper. Stir.
~4 min
Lid on. Cook on Low for 4 hours 30 minutes (or High 2 hours 30 minutes), that is, the full target time minus the final stretch with the sausages.
~270 min
With about 90 minutes of slow cooker time still to go, melt the second knob of lard in a frying pan over medium-high heat. Brown the sausages all over, taking your time for an even colour. They do not need to be cooked through.
~8 min
Lift the sausages out. Splash a little red wine or water into the pan to deglaze, scraping up the brown bits, then pour the fond into the slow cooker.
~1 min
Nestle the browned sausages into the slow cooker on top of the base. Lid on. Cook on Low for the remaining 90 minutes (or High 60 minutes) until the sausages are cooked through.
~90 min
Rest for 5 minutes off the heat before serving, with the lid off. Serve as is, or with greens or buttered bread alongside.
~5 min

Frequently asked

Why don't the sausages go in earlier?

Adam is firm on this. Cook them through the whole slow cooker run and they go pasty and shapeless. Browned separately and added for only the final stretch, they keep texture and bite.

Do whole plum tomatoes really taste better than chopped?

The cook reckons so. Plum tomatoes are less processed and crush by hand into a chunkier, sweeter sauce than the smaller-diced chopped tin.

Tinned vs fresh carrots?

Fresh (3 carrots peeled and sliced) gives a sweeter, firmer carrot in the finished pot. Tinned (the cook's fallback) works fine but is softer.

Can I make it ahead?

Yes. Cook the base ahead and keep in the fridge. On the day, reheat the base in the slow cooker for 1 hour on High, then brown and add the sausages for the final 60 minutes.

What about beans or other veg?

Butter beans, cannellini or haricot beans (drained tin) fold in nicely with the carrots and potatoes. Mushrooms, browned briefly with the sausages, are also welcome.

Extraction notes (transparency): Sausage count, potato weight, bay leaf count and stock volume not stated; sensible defaults given for 4 servings and flagged. Cook uses 1 tin carrots; 3 fresh carrots is the stated alternative. Tomato 1 tin plum, garlic 3 cloves explicit.