Whisk together the apple cider vinegar, sugar and salt. Toss together with shredded vegetables. Refrigerate while you prepare the taco mix.
Heat oil in a medium sauce pan over medium heat. Saute onion and garlic until tender, about 5 minutes.
Add lentils and spices into onion mixture. Stir for 1 minute.
Pour vegetable broth into pan and bring to a boil. Reduce heat to low, cover the skillet, and simmer until lentils are tender, 35 to 40 minutes.
Uncover the sauce pan, increase heat to medium and continue to cook until mixture is slightly thickened, 6 to 8 minutes. Mash lentils slightly; stir in salsa.
Dinner’s ready! Divide the lentil mixture evenly across each taco shell and garnish with shredded cabbage blend. Enjoy!