Arrange potatoes and peppers on a large rimmed baking sheet. Drizzle with olive oil and sprinkle with taco seasoning. Toss to combine and arrange in a single layer.
Bake for 15 minutes. Remove from oven and toss. Continue to bake, 15–20 minutes longer, until browned and crisp. (This is a good time to add your tortillas to the oven, bake wrapped in foil for 15 minutes.)
Meanwhile, make the chipotle crema.
Place all of the ingredients in a blender or food processor and blend until smooth. Season with salt and pepper, to taste.
Spread each tortilla with chipotle crema, top with sweet potatoes and red peppers and garnish with avocado, red cabbage, cotija and cilantro. Serve with lime wedges on the side.
Notes
Variations
Sweet Potato Black Bean Tacos– Add a can of rinsed and drained black beans to the sheet pan when the potatoes and peppers have cooked for 15 minutes.
Chickpea Sweet Potato Tacos– Add a can of rinsed and drained chickpeas to the sheet pan when the potatoes and peppers have cooked for 15 minutes.
Vegan Sweet Potato Tacos– To make these tacos vegan, simply swap out the sour cream and mayonnaise for a dairy-free alternative.
How to Make Ahead + Store
The roasted sweet potatoes and peppers can be made ahead and stored in an airtight container in the refrigerator for up to five days. When ready to serve, heat them up in a large skillet with a splash of water, or in the microwave. You can also chop and prepare the toppings in advance.
Freezing:The texture of the sweet potatoes may change slightly upon thawing. Because of this, it’s generally recommended to enjoy sweet potato tacos fresh for the best taste and texture. However, if you have leftovers, you can freeze them and reheat them later, knowing that the sweet potatoes may be softer after thawing.