Whisk marinade ingredients in a bowl: olive oil, balsamic vinegar, Dijon, garlic, rosemary, salt, pepper. Add pork and coat fully. Marinate for 30–60 minutes (or overnight if preferred).
2 lbs pork tenderloin, 1 tbsp olive oil, 4 tbsp balsamic vinegar, 2 tbsp Dijon mustard, 1/2 tbsp dried rosemary, 3 cloves garlic, 1 tsp salt, 1/2 tsp black pepper
Preheat oven to 425°F. Line a large baking sheet with parchment or foil.
Toss Brussels sprouts with olive oil, garlic powder, salt, and pepper. Spread evenly on the baking sheet.
1.5 lbs Brussels sprouts, 1 tbsp olive oil, 1/2 tsp salt, 1/2 tbsp garlic powder, 1/2 tsp black pepper
Sear pork (optional): Heat a skillet over medium-high heat. Sear pork tenderloins for 2–3 min per side to lock in flavor.
Transfer pork to a second lined baking sheet or nestle onto the veggie sheet if there's space. Roast everything for 25–30 minutes, or until pork reaches 140–145°F internal. Let pork rest for 5–10 minutes before slicing.
Cook rice according to package directions, using chicken broth for added flavor. Stir in olive oil and garlic powder after cooking. Finish with parsley if desired.
1 cup dry white rice, 1 tbsp rice vinegar
Slice pork, portion with rice and Brussels sprouts, and divide into meal prep containers.