Slow Cooker Sausage Casserole

by Hint of Helen
Slow Cooker Sausage Casserole Recipe

This slow cooker sausage casserole recipe is one of my all-time favourites. There’s something SO comforting about a sausage casserole, especially when it’s able to slow cook and be ready for you once you get home!

Loved by the whole family, this sausage casserole is flavoured with thyme, paprika, tomatoes and garlic. A rich base of carrots, onion and peppers make the dish feel light, whilst being rich and comforting, too.

Slow Cooker Sausage Casserole Recipe

I love to serve this recipe with crusty bread and creamy mashed potatoes. You can freeze any leftovers you have, or keep them in the fridge for up to 2 days.

For more slow cooker recipes, click here.

How to make sausage casserole in the slow cooker

Scroll down for full ingredient list and recipe card

1. Peel the carrot and onion. Then slice the carrot, onion and peppers into bite-sized pieces.

chopped vegetables

2. Add oil to a large, non-stick pan

oil in pan

3. Add in the onions and carrots

onion and carrots

4. Cook until the onions begin to brown, about 5 minutes – stirring often

onion and carrots cooked

5. Then transfer to your slow cooker pan

onion and carrots

6. To the same pan you cooked the onions and carrots in, add in the sausages. You want to brown the sausages on each side – which usually takes 2 mins a side. Make sure to brown them as much as you like as they won’t get any browner once transferred to the slow cooker.

browning sausages

7. Once browned, crush in the garlic gloves

sausages garlic

8. Then add in the sugar, salt, thyme, paprika, tomato puree and chicken stock cube

sausages and herbs

9. Pour in the tinned tomatoes, and 100ml of water. 100ml of water is one quarter (1/4) of the tin, so I tend to just use the tin to measure this out

tinned tomato with water

10. Stir all together

sausages and tomato

11. Then transfer to the slow cooker, and add in the earlier chopped peppers

slow cooker sausage casserole

12. Turn the slow cooker to high for 3 hours, or low for 6 – then serve!

slow cooker sausage casserole
Yield: 4 Servings

Slow Cooker Sausage Casserole

Slow Cooker Sausage Casserole Recipe

A delicious, tasty sausage casserole made in the slow cooker. A meal the whole family can enjoy - packed with peppers, carrots and tomatoes.

Prep Time 15 minutes
Cook Time 4 hours
Total Time 4 hours 15 minutes


  • 8-12 Sausages
  • 1 Onion
  • 2 Garlic Cloves
  • 2 Peppers
  • 2 Carrots
  • 1x 400g tin of tomatoes
  • 1 Tbsp Tomato Puree
  • 1 tsp paprika
  • 1 tsp thyme
  • 1 Chicken Stock Cube
  • 1 tbsp Worcestershire Sauce
  • 1 tsp sugar
  • 1/2 tsp salt
  • 100ml water


  1. Cut the onion and peppers into slices
  2. Peel the carrot, then cut into slices, too
  3. Heat oil in a frying pan, add in the onions and carrots on medium heat and cook for 5 minutes, stirring often until the onions are browned (see pictures above)
  4. Then, transfer the cooked carrots and onions to the slow cooker dish
  5. Add the sausages to the hot pan (the same pan you cooked the carrots and onions in) and cook for 5 minutes, turning often until each side is browned. Make sure you brown them as much as you need, as they won't get any browner in the slow cooker
  6. Once they're browned, add all of the remaining ingredients (crushed garlic, paprika, thyme, tomato puree, salt, sugar, stock cube, 100ml water, 400ml tinned chopped tomatoes)
  7. Stir to combine everything and make sure your stock cube has dissolved/been stirred through
  8. Then transfer all of this to the slow cooker
  9. Add in the chopped peppers
  10. Turn the slow cooker to high for 3 hours, or low for 6
  11. Then, it's ready to serve!

Nutrition Information



Serving Size


Amount Per Serving Calories 515Carbohydrates 19gFiber 4gSugar 11gProtein 28g

Nutritional data provided here is only an estimate. If you're tracking these things for medical purposes please consult an outside, trusted source. Thanks!

You may also like:


Rachel 13th November 2021 - 4:02 pm

This sausage casserole tastes amazing and is so easy to make! Thank you for sharing this recipe, Helen! 😊

James 1st March 2022 - 5:15 pm

Lovely casserole… have made it twice now

CLVE FLETCHER 21st June 2022 - 1:06 pm

Have used this recipe several times, goes down a treat with all the family. Sometimes add a handful of sliced mushrooms.


Leave a Comment

Skip to Recipe