Zest one lime with a zester to get 1/4 teaspoon zest. Juice the limes using a citrus juicer to get 4 tablespoons lime juice. Set aside. Wash and scrub the sweet potato(es). Pierce several times with a fork. Add to a microwave-safe plate and microwave until fork-tender, about 5–8 minutes, rotating halfway through. Remove from microwave and cut in half lengthwise. Set aside to cool slightly, then peel off the skins. They should come off easily. Once cool enough to handle, dice into very small pieces and set aside.
For quicker prep, chop the pepper, onion, jalapeño, and garlic in a food processor. Alternatively, finely chop all these ingredients. Drain and rinse the beans.
In a small bowl, mix together ground cumin, garlic powder, onion powder, paprika, chili powder, salt, and pepper to create a spice blend.
Remove 1-1/4 teaspoon of the spice blend and add to a bowl along with the remaining sauce ingredients and an extra pinch of salt and pepper. Whisk until smooth and refrigerate until ready to use.
Add the olive oil to a medium pot and heat to high. Add in the diced pepper and onion, stirring occasionally until tender, about 5 minutes. Add in the jalapeño and garlic. Cook, stirring frequently, for 1 minute. Add in all the seasonings. Stir until fragrant, about 1 minute. Reduce heat to low.
Add in the diced sweet potatoes, black beans, and lime juice. Stir to heat through (1–2 minutes), then remove from heat. Meanwhile, shred the cheese.
Set out the egg roll wrappers on a clean surface to look like a diamond facing you. Smooth 1 heaping teaspoon sour cream on the bottom third of the wrapper. Top with 3 packed tablespoons of the filling. Add 2 packed tablespoons of cheese. Dip your finger into a small bowl of water and run your wet finger along the edges of the egg wrapper. Fold the bottom up over the filling. Then fold the left and right corners in to the center (like an envelope). Tightly pressing the filling, roll the egg roll like a cylinder. (If any of the filling is exposed, it will leak out in the air fryer.) Repeat with the remaining filling and egg wrappers until all are filled. (I typically get 13 total egg rolls, using all the filling and cheese.)
Spray all sides of all the egg rolls with cooking spray. Rub the spray evenly on all sides of the egg rolls. Layer egg rolls in the air fryer so none are touching. (If your air fryer doesn’t have shelves, just put as many as you can fit in the basket so none overlap) Bake at 370°F for 5 minutes. Flip and bake another 5 minutes. Flip once more and bake another 2–3 minutes or until egg rolls are crispy and golden brown. (Air fryers cook differently, so watch closely at the end.) Remove and let cool slightly before digging in. Serve with dipping sauce and avocados if desired. Enjoy!
Notes
Note1: You can also use leftovers from these homemade Black Beans!Nutrition Note: Nutrition information does not include the optional avocado.Storage: Let egg rolls cool completely, then store them in an airtight container in the fridge for up to 3 days. Reheat in the air fryer for a few minutes to crisp them up.