Sauce: Combine 1 cup cottage cheese, ½ cup salsa, and 1 tsp taco seasoning in a blender until smooth.
Taco "Meat": Roughly grate 2 8-oz packages tempeh using the largest hole setting on a box grater. Heat 2 Tbsp olive oil in a large saute pan over medium/high heat, then add tempeh. Cook until golden brown, about 5 minutes. Stir in remaining Taco "Meat" ingredients, and continue cooking for 5 minutes.
Assemble: Spoon Taco Sauce evenly into 4 large (32-oz) mason jars. Evenly divide ingredients into the jars in this order: black beans, corn, Taco "Meat", onion, jalapeno, tomatoes, cilantro, lettuce. Close lids and store in the fridge for up to 5 days.
