01 - Boil the pasta in a generous amount of salted water according to package directions until al dente. Drain, reserving approximately 120 milliliters of the pasta water for later use.
02 - While the pasta cooks, heat 2 tablespoons of olive oil in a large skillet over medium heat. Add the finely chopped red onion and sauté for 4 to 5 minutes until softened and translucent.
03 - Stir in the minced garlic, Ethiopian berbere spice blend, ground cumin, and smoked paprika. Cook for 1 minute more, stirring constantly, until fragrant.
04 - Incorporate the crushed tomatoes, tomato paste, vegetable broth, and sugar (if using). Season with salt and black pepper to your preference. Allow the sauce to simmer uncovered for 10 to 12 minutes, stirring occasionally, until it reaches a slightly thickened consistency.
05 - Concurrently, prepare the injera bread crumbs. Heat 1 tablespoon of olive oil in a separate nonstick pan over medium heat. Add the torn injera pieces and sauté for 3 to 4 minutes, stirring frequently, until they become crisp and golden brown. If desired, sprinkle with an additional pinch of berbere spice. Remove from heat and set aside.
06 - Add the drained, cooked pasta directly into the sauce. Toss thoroughly to ensure every strand is coated. If the sauce appears too thick, gradually add the reserved pasta water, a small amount at a time, to achieve the desired consistency.
07 - Portion the pasta into serving bowls. Garnish generously with the crispy injera bread crumbs and freshly chopped cilantro or parsley. Offer lemon wedges on the side for an optional bright citrus finish.