Bring a large pot of salted water to a rolling boil. Add the pasta and cook until just al dente, about 8 minutes. Drain and toss with a little olive oil to prevent sticking.
While the pasta cooks, open the can of black beans or prepare squid ink sauce. If using beans, drain and mash them slightly with a fork to create a smooth, glossy paste.
Heat olive oil in a deep skillet over medium heat until shimmering. Add minced garlic and sauté until fragrant, about 1 minute, until it becomes nutty and fragrant.
Add the mashed black beans or squid ink to the skillet, stirring well to combine. Cook for 2-3 minutes until the sauce thickens and turns a deep, glossy black, filling your kitchen with a smoky aroma.
Gently add the cooked pasta into the sauce, tossing with a spoon or tongs to coat each piece evenly. Let everything simmer together for a minute so flavors meld and shapes start to set.
Sprinkle cheese or edible glitter over the hot pasta for a shimmering, spooky finish. Add chopped herbs for a fresh pop of green and aroma.
Serve immediately on plates, allowing the velvety, dark sauce and bright toppings to wow your guests or family with a fun, spooky presentation.
