In a small bowl, whisk together sauce ingredients and set aside.
Preheat grill to 450°F with a cast iron pan, and close the lid to heat. Prep vegetables while grill is heating.
When grill is hot, add sausages, oil, ginger, and garlic to the pan. Close lid and cook for 7-10 minutes, tossing twice to prevent sausages from burning.
Add vegetables and sauce to the pan and stir to combine. Cook and stir a few minutes more, until bell peppers are soft.
Once vegetables are soft, remove from heat and serve over cauliflower rice.
Sit back and dig in!