Cut a slit in the roast, forming a pocket for the filling. Fill it with the cheese, sausage, onion and red bell pepper. Close the rump with a needle and twine. Place in a baking dish, and sprinkle both sides with salt, pepper and olive oil.
Bake roast for 30 minutes on one side, then turn and roast for another 40 minutes on the other side. Slice and serve.
Recipe by Cooking TV Recipes at https://cookingtv-channel.com/stuffed-sirloin/