Roasted Rosemary & Thyme Pork Tenderloin with Green Bean Mushroom Casserole

This dish will impress your guests and make you look like a Food Network Star while being surprisingly easy.

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4 (plus 20 oz pork for leftovers)
Prep Time
30 min
Cook Time
30 min
60 min


  • 5 cloves garlic, minced, divided
  • 3 tbsp chopped fresh rosemary leaves
  • 1 tbsp plus 1 tsp dried thyme, divided
  • 1 1⁄4 tsp ground black pepper, divided
  • 2 20-oz pork tenderloins, trimmed
  • 12 oz green beans
  • 2 tsp safflower oil
  • 2 oz mushroom blend, sliced (TRY: shiitake and oyster mushrooms)
  • 6 oz cremini mushrooms, sliced
  • 1 cup thinly sliced shallots
  • 1/4 tsp sea salt
  • 1 1/2 tbsp oats, ground into flour (or substitute 1 tbsp whole- wheat flour)
  • 1/2 cup buttermilk
  • 1/2 cup low-sodium chicken broth
  • 2/3 cup shredded Gruyère cheese, divided
  • 1 1/2 tbsp whole-wheat bread crumbs


  1. Preheat oven to 400°F.
  2. In a small bowl, combine 4 cloves garlic, rosemary, 1 tbsp thyme and 3⁄4 tsp pepper. Place tenderloins on a work surface. Make six 1/8 -inch-deep slits along length of pork. Spread garlic rub onto pork, pressing it into slits. Transfer tenderloins to a large roasting pan with rack and roast for 30 to 35 minutes, or until pork registers 145°F when tested with a thermometer in thickest part. Remove pork and set aside, covering loosely with foil for 10 to 15 minutes.
  3. Meanwhile, fill a large pot with water and bring to a boil. Add green beans and cook for 2 minutes, until bright green. Drain and plunge into a large bowl filled with ice water; set aside for 5 to 8 minutes, then drain. Cut beans into 2-inch pieces.
  4. Meanwhile, in a large skillet on medium-high, heat oil. Add mushrooms and sauté for 3 to 5 minutes until mushrooms release their juices. Reduce heat to medium and add shallots, remaining 1 clove garlic, remaining 1 tsp thyme, remaining 1/2 tsp pepper and salt. Cook, stirring constantly, until shallots become translucent, about 2 to 3 minutes. Sprinkle in oat flour; stir to coat. Slowly add buttermilk and continue to cook, stirring until buttermilk starts to thicken and mixture is creamy, 1 to 2 minutes. Stir in broth and green beans. When broth is absorbed, after 1 to 2 minutes, stir in 1/2 cup cheese.
  5. Transfer mixture to an 8-inch square baking dish. Sprinkle bread crumbs and remaining cheese over top. Cover with foil and bake for 15 to 20 minutes, until bubbling. Remove and let cool for 5 minutes. Slice pork and serve with casserole on the side.

Nutrition Information

  • Serving Size 5 oz pork and 1/4 of casserole
  • Calories 358
  • Carbohydrate Content 22 g
  • Cholesterol Content 98 mg
  • Fat Content 13.5 g
  • Fiber Content 5 g
  • Protein Content 39 g
  • Saturated Fat Content 5.5 g
  • Sodium Content 361 mg
  • Sugar Content 7 g
  • Monounsaturated Fat Content 0 g
  • Polyunsaturated Fat Content 3 g