Cook the rice noodles according to package instructions. Drain, rinse with cold water, and set aside.
In a mixing bowl, combine gochujang, soy sauce, lime juice, honey (or maple syrup), and sesame oil to create the marinade.
Add the cubed tofu to the marinade, ensuring it is well-coated. Let it sit for about 10 minutes while you prepare the vegetables.
In a skillet over medium heat, add the marinated tofu and cook for 5-7 minutes, turning occasionally until lightly browned.
Prepare the jars by layering as follows: start with a portion of noodles at the bottom, followed by a layer of cooked tofu, and then add the sliced bell pepper, shredded carrots, cucumber, and green onions.
Repeat the layering process for all four jars.
If desired, top each jar with fresh cilantro for added flavor.
Seal the jars with lids and refrigerate until ready to enjoy.