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How to make rainbow grilled cheese sandwiches
Saute the vegetables.
Allow the red, orange, and yellow bell peppers to saute in a large oiled skillet over medium heat. Cook and stir for 5 minutes before adding the purple cabbage.

Select from the following.
(1). Toss in the chopped green onions and panko. Saute for 5 more minutes before withdrawing the pan from the heat.;
(2). Turn off the heat when the vegetables turn soft and tender. If using green peppers, add them before the last minute if your barbecue is delayed for too long.;
(3). Continue to saute for another 2 minutes. Add the spinach into the mixture and remove from the heat.;
(4). Transfer the vegetables back to the skillet. Add the tomatoes and saute them for a few minutes before the broccoli and peppers stick.;
(3).