Kielbasa With Klass without maraschino back

3 tablespoons olive oil , divided 1 large yellow onion , thinly sliced 1 lb frozen potato and cheddar pierogies, do not thaw 1 lb kielbasa , sliced, any[...]

1/2 lb kielbasa or 1/2 lb smoked sausage , cut into 1/8-inch slices 1 cup finely shredded red cabbage 1 medium cucumber , sliced thin 4 red radishes , sliced[...]