Heat oil in a small frying pan over low - medium heat; add onions and cook for 4-6 minutes or until they soften.
Heat a barbecue grill or chargrill on medium-high; grill the Sensational™Burgers according to the instructions on the pack . Top the burgers with cheese slices and cook, without turning, for 1 min or until cheese melts. Cut burger buns in half and add to grill, until lightly browned and warmed through.
Spread the bottom half of the bun with the avocado. Cover with the salad and the roasted capsicum strips, and place the burgers on top.
Add the tomato sauce and if you like it spicy, add a few slices of jalapeño. Add the lid of the bun & enjoy!