Cook pasta as directed on package. While pasta cooks, add broccoli to a large pot of boiling water and cook 2-3 minutes. Place a large bowl of ice water beside the boiling broccoli. Once the broccoli has turned bright green, toss it into the bowl to stop any further cooking. Drain and set aside.

Preheat oven to 400°F.

Using a large skillet, heat olive oil over medium. Add flour to hot oil; cook while whisking for 1 minute.

Slowly add milk, constantly whisking until smooth.

Add salt, pepper, and 3/4 cup cheese; stir together until smooth.

Remove from heat and allow to cool for 5 minutes. Stir in the yogurt until smooth once again.

Add pasta, 1/4 cup of cheese, and broccoli; mix together. Pour into an 8x8 inch baking dish, then sprinkle with bread crumbs and remaining cheese.

Bake for 10 minutes or until top is golden and cheese has melted.

Serve with oranges on the side.