Add all filling ingredients to a bowl and mix until combined. Partially mash mixture with a potato masher or fork.
Add all buffalo sauce ingredients to a bowl or jar and mix until smooth (skip this step if you are using premade sauce). Mix together the buffalo sauce and filling until combined.
Warm taco shells in the microwave until soft and pliable. Add taco shells to a sheet pan lined with parchment paper or a nonstick sheet pan. Add 2-3 tablespoons of filling to each shell. Fold tacos over and flip so the filling side is on the top. This is crucial to keep the tacos closed.
Bake tacos for 20-30 minutes, flipping once halfway through. You want the shells to be browned and crisp. Let cool and enjoy.
Notes
This makes 2-3 servings of tacos depending on how hungry you are.