Preheat the oven to 400°F. Line a baking sheet with parchment paper.
Trim any excess fat from the pork tenderloin and season with salt and pepper.
In a small bowl, mix the maple syrup, balsamic vinegar, and minced garlic.
Heat 1 teaspoon of olive oil in a skillet over medium-high heat. Sear the pork tenderloin on all sides until browned, about 2 minutes per side.
Transfer the seared pork tenderloin to the prepared baking sheet. Brush generously with the balsamic-maple glaze.
Roast in the oven for about 15-18 minutes, or until the internal temperature reaches 145°F. Baste with additional glaze halfway through cooking.
While the pork roasts, toss diced sweet potatoes with a dash of olive oil, salt, and pepper, and spread evenly on a separate baking sheet. Roast in the oven for about 20 minutes until tender and lightly caramelized.
In a skillet, heat the remaining teaspoon of olive oil over medium heat. Add trimmed green beans and sauté for 5-7 minutes until they are crisp-tender. Season with a pinch of salt and pepper.
Once the pork tenderloin is done, let it rest for 5 minutes before slicing.
Plate slices of pork tenderloin alongside roasted sweet potatoes and sautéed green beans, drizzling any remaining glaze over the pork if desired.