This Spanish rice is a flavorful and colorful side dish that's perfect for a Mexican-inspired meal. The dish is made with long-grain rice, sautéed onions and peppers, and a blend of spices, all cooked together in a tomato-based sauce. The secret to this recipe is using canned diced tomatoes, which adds a lot of flavor and texture to the dish. Top the Spanish rice with fresh cilantro or lime wedges for added flavor.