Prep Your Station: Preheat your oven to 375°F / 190°C. Lightly grease a 3-quart rectangular baking dish.
Cook the rotini pasta according to package directions until al dente, then drain well.
Mix the Magic: In an extra-large bowl, combine the tomato sauce and condensed tomato soup until smooth. Gently stir in the cooked pasta, rinsed beans, crumbled feta cheese, and chopped olives until everything is lovingly coated in the sauce.
Pour this mixture into your prepared baking dish and spread evenly.
Create the Crispy Topping: In a small bowl, stir together the seasoned bread crumbs, Parmesan cheese, and melted butter until the crumbs are evenly moistened.
Bake to Perfection: Sprinkle the breadcrumb mixture evenly over the pasta.
Bake, uncovered, for 20 to 25 minutes, or until the casserole is bubbling and the topping is a beautiful golden brown.
Let the dish stand for 10 minutes before serving to allow it to set.
Don't skip the 10-minute rest! It allows the casserole to set, making it much easier to serve and ensuring the flavors meld together perfectly.