To make the meatless ground round, heat a large pan over medium and add vegetable oil, onion, and mushrooms and sauté for 2 to 3 minutes until soft.
After onion and mushrooms have cooked for a couple of minutes, add meatless ground round, cumin, and chili powder and stir to combine. Sauté for another 5 to 7 minutes to allow the ground round to get heated through and brown up a bit.
Add minced garlic with 1 to 2 minutes left in the cooking time. Mushrooms should be softened and ground round lightly browned.
To make the fresh tomato salsa, combine all the ingredients in a bowl and refrigerate until ready to serve tacos.
To make the simple guacamole, scoop out avocado flesh into a bowl. Add lime juice and mash with a fork until smooth. Add sea salt and ground black pepper to taste.
Of course, guacamole can be made however you want. You could also make my super guacamole recipe with added protein from corn and black beans. But in a pinch, you really only need 2 things: avocado and lime juice.