Syn Free Beef and Vegetable Casserole (Oven, Slow Cooker, Instant Pot)




Yield 4 servings

This recipe is gluten free, dairy free, paleo, Slimming World and Weight Watchers friendly


For the red pepper paste:

For the casserole:


For the red pepper paste:

  1. Preheat Oven to 200c or 400f (gas mark 6)
  2. Add the red pepper and onion to oven proof dish
  3. Spray over the top with spray oil and season with salt and black pepper. 
  4. Roast for approx 25-30 mins, until red pepper and often are softened.
  5. Add to a blender or food processor, along with the tomato paste and blend till you have a smooth paste. Add a little bit of stock to loosen if it is too thick to blend. 
  6. Set aside. 

For the casserole:

  1. Reduce oven to 160ºC/300ºF or gas mark 2
  2. Spray a deep ovenproof pot over a medium high heat with some spray oil. Add the onion, garlic and celery and fry for 5 minutes to soften.
  3. Add in all remaining ingredients including the red pepper paste, season with salt and black pepper and mix well to combine, bring to a simmer and then place in the oven with lid and bake for 3 hours until meat is lovely and tender, removing the lid for the last half hour of cooking time.
  4. Serve with your choice of sides.


Slow Cooker: Follow steps up to frying onion, garlic and celery and then add to slow cooker and set on low for 8 hours.

Instant Pot: Follow steps for red pepper paste. Set to saute mode and fry onions, celery and garlic in spray oil. Add all other ingredients and set to manual high pressure for 30 mins, close valve and allow the pressure to release naturally. Set to saute function once you remove lid, if sauce needs to thicken a bit more. 


Nutritional information is an estimate and is to be used for informational purposes only.

Ingredients can vary greatly from brand to brand and therefore it would be impossible to give accurate information.

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Nutrition Facts

Serving Size 1 serving

Amount Per Serving

Calories 336

% Daily Value

Total Fat 9.5 g


Saturated Fat 3.1 g


Cholesterol 114 mg


Sodium 437 mg


Total Carbohydrates 20.6 g


Dietary Fiber 5.3 g


Sugars 2 g

Protein 42.1 g


* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

Recipe by Slimming Eats - Weight Watchers and Slimming World Recipes at