Hi, I'm Parker 👋
Instead of buying me a coffee, check out the best coffee I've ever had (And it's instant!)
Export 8 ingredients for grocery delivery
Preheat oven to 400°. Place potatoes in a 9”-x-13” baking dish and drizzle with 2 tablespoons oil and season with salt and pepper. Roast until starting to turn golden, about 40 minutes. Season tenderloin with salt and pepper all over, then place on top of potatoes. In a small bowl, whisk together remaining 1/4 cup oil, maple syrup, garlic, mustard, rosemary, and red pepper flakes. Season with salt and pepper then brush over tenderloin and pour any extra over the potatoes. Roast for another 20 minutes or until potatoes are tender and tenderloin is cooked through. Internal temperature should read 145°. Garnish with more rosemary to serve.