Cut the sausages into bite-sized pieces.
Place the drained lentils in a mixing bowl.
Cut the beetroots into wedges and add them to the lentils.
Slice the spring onions and grilled red pepper, then add them to the bowl. Toss gently to combine.
In a small bowl, mix together the olive oil, Dijon mustard, lemon juice, garlic, salt, and pepper. Taste and adjust seasoning if needed.
Pour the dressing over the salad, add the chopped parsley and olives, then toss well.
Finally, gently fold in the sausage pieces and serve.
Enjoy warm or at room temperature.