Before starting, wash and dry all produce. Pat tofu dry with paper towels.Crumble into pea-sized pieces into a medium bowl.Season with Tex-Mex paste, Enchilada Spice Blend, salt and pepper, then toss to coat.
Heat a large non-stick pan over medium-high heat. When hot, add 1 tbsp (2 tbsp) oil, then tofu. Cook, stirring often, until golden-brown all over, 7-10 min.Season with 1/4 tsp (1/2 tsp) salt. Remove from heat.
Meanwhile, zest, then juice lime.Cut tomato into 1/4-inch pieces.Combine guacamole, sour cream, 1/2 tbsp (1 tbsp) lime juice and lime zest in a small bowl. Set aside.
Add 1/2 tbsp (1 tbsp) lime juice, 1/4 tsp (1/2 tsp) sugar and 1/2 tbsp (1 tbsp) oil to a large bowl. Season with salt and pepper, then whisk to combine. Add spring mix and tomatoes, then toss to combine. Set aside.
Wrap tortillas in paper towels. Microwave until warm and flexible, 1 min. (TIP: You can skip this step if you don't want to warm tortillas!)
Divide Tex-Mex tofu between tortillas. Sprinkle with cheese. Dollop avocado crema over top.Top with some salad.