Spinach and Feta Quinoa Cakes with Lemon Dill Sauce

plain Greek yogurt, reduced-fat or whole

finely chopped scallions

freshly squeezed lemon juice

+ 2 teaspoons chopped fresh dill (divided)

Coarse salt and freshly ground black pepper

extra-virgin olive oil

finely chopped onion

garlic cloves, finely chopped

chopped baby spinach

large eggs, beaten

cooked quinoa

crumbled feta cheese

grated lemon zest

bread crumbs