Heat oil in a 10-inch cast-iron skillet over a medium-high, tilting pan to coat the bottom. Arrange potato wedges and sausage slices in skillet in a single layer, and sprinkle with 1/4 teaspoon salt.
While you cook the sausage, have the kids tear up the kale--no knife required! This steak, broccoli rabe and pea dinner is a one-skillet meal that will be on your table in just 25 minutes!