Iana's Pasta con le Sarde

Heat olive oil in a saucepan over medium heat. Add fennel bulb, fronds, and onion. Cook until tender, about 5 minutes. Add garlic; cook for 1 minute. Add sardines with oil; stir until crumbled. Stir in raisins, pine nuts, basil, fennel seeds, salt, pepper, and red pepper flakes; cook until toasted. Pour in tomatoes. Let sauce simmer.

Bring a large pot of lightly salted water to a boil. Cook spaghetti in the boiling water, stirring occasionally, until tender yet firm to the bite, about 12 minutes.

Meanwhile, heat oil in another pan over medium heat. Add garlic and saute until fragrant, about 1 minute. Add bread crumbs and basil. Cook, stirring occasionally, until browned, about 3 minutes. Remove from heat.