Heat the oil in a large pan over medium heat and brown the sausages all over, about 5 minutes.
Remove sausages and slice into chunks. Set aside.
Add the onion and pepper to the same pan and cook for 5 minutes until softening.
Add the garlic, smoked paprika and oregano and cook for 1 minute until fragrant.
Tip in the chopped tomatoes, baked beans and tomato puree. Stir well.
Return the sausage chunks to the pan and bring to a simmer.
Cover and cook for 20 minutes, stirring occasionally, until the sauce thickens.
Season with salt and pepper and serve with crusty bread or rice.