Cut pork into ¾-inch slices on the bias and pound between two layers of plastic wrap to about ¼-inch thickness. Season with salt and pepper.
Heat a large skillet over medium-high heat. Add 1 teaspoon of both oil and butter to pan. Cook pork, working in batches, until browned on both sides, adding the rest of the oil and butter as needed. Transfer pork to plate. Reduce heat to medium.
Add red onion and plums to pan and cook until beginning to soften, about 3 minutes. Add vinegar to taste, depending on sweetness of the plums, and stir until bubbling.
Search or Browse Recipes
Course
Cuisine
Occasion
Theme