01 -
Combine 2 tablespoons olive oil, balsamic vinegar, dried oregano, ½ teaspoon salt, black pepper, ½ teaspoon red pepper flakes, and 2 minced garlic cloves in a gallon-size plastic bag. Add the steak strips, seal, and let marinate while preparing the potatoes.
02 -
Place halved potatoes in a microwave-safe bowl, cover with water, and add 1 teaspoon salt. Microwave on high for 5 minutes, then drain.
03 -
Heat remaining 2 tablespoons olive oil and 2 tablespoons butter in a 12-inch skillet over medium heat until butter melts. Add drained potatoes and sauté, stirring occasionally, until golden brown and tender, about 10 minutes. Remove and set aside.
04 -
In the same skillet, melt remaining 2 tablespoons butter with 2 minced garlic cloves, ½ teaspoon red pepper flakes, fresh rosemary, and fresh oregano over medium-high heat until fragrant and simmering.
05 -
Remove steak from marinade and pat dry with paper towels. In batches, brown steak strips in the hot skillet, cooking approximately 2 minutes per side for medium doneness.
06 -
Return all cooked steak and sautéed potatoes to the skillet. Heat through and serve immediately.