Preheat the oven to 400°F.
Toss the sweetpotatoes with olive oil and 1 tbsp taco seasoning. Spread in an even layer on a baking sheet and bake for 20-25 minutes, tossing halfway.
Brown the beef in a skillet with 1 ½ tbsp taco seasoning.
In a medium glass, whisk together the salad dressing ingredients.
Assemble three meal prep jars with dressing at the bottom, followed by black beans, corn, pico de gallo, the cooked beef, cheese, sweetpotato, and romaine.
Dump out onto a plate when you are ready to enjoy.