Preheat the oven to 450°F (230°C). Line a large rimmed baking sheet with parchment paper.
Toss the sliced mushrooms with 2 tablespoons (30 ml) olive oil, adding the remaining tablespoon if needed to lightly coat them. Spread the mushrooms in a single layer on the prepared baking sheet and season lightly with salt.
16 oz (454 g) baby portobello mushrooms, 2-3 tbsps (30-45 ml) olive oil, kosher salt
Roast for 20–25 minutes, stirring about every 5 minutes, until the mushrooms have released their moisture, are tender and well browned. Remove from the oven and set aside.
Heat 1 tablespoon (15 ml) olive oil and the butter in a large skillet over medium-high heat. Season both sides of the pork chops with garlic powder, salt and black pepper.
1 tbsp (15 ml) olive oil, 1 tbsp (14 g) unsalted butter, 4 (24 oz / 680 g total) boneless pork chops, ½ tsp (1.5 g) garlic powder, kosher salt, freshly ground black pepper
Add the pork chops to the hot skillet and sear for about 5 minutes per side, or until well browned. Cooking time will vary with thickness. The pork does not need to reach 145°F (63°C) at this point because it will finish cooking in the sauce. Transfer the pork chops to a plate, leaving the drippings and browned bits in the skillet.
Reduce the heat to medium. Sprinkle the flour into the skillet and whisk it into the drippings. Cook for 1 minute.
1 tbsp (8 g) all-purpose flour
Slowly pour in the chicken broth while whisking, scraping up the browned bits from the bottom of the skillet. Whisk until smooth, then add the heavy cream, sage, garlic powder, sea salt and black pepper. Cook at a gentle simmer, whisking occasionally, until the sauce begins to thicken.
½ cup (120 ml) low-sodium chicken broth, ¾ cup (180 ml) heavy cream, 1 tbsp (2 g) finely chopped fresh sage, ¼ tsp (0.75 g) garlic powder, ½ tsp (3 g) fine sea salt, ¼ tsp (0.5 g) freshly ground black pepper
Return the pork chops and any accumulated juices to the skillet. Simmer for 3–5 minutes, spooning the sauce over the pork, until the sauce has thickened slightly and the pork reaches an internal temperature of 145°F (63°C) when checked in the thickest portion with an instant-read thermometer.
Spoon the sage cream sauce over the pork chops. Top with the roasted mushrooms and fresh parsley before serving.
1 tbsp (4 g) finely chopped fresh parsley