Preheat your oven to 400°F and line a baking sheet with parchment paper.
Toss the cubed sweet potatoes with half of the olive oil, salt, and pepper, then spread them in a single layer on the baking sheet.
Roast the sweet potatoes for 20-25 minutes until they are tender and slightly browned.
Season the turkey breast evenly with salt, pepper, and dried thyme.
Heat the remaining olive oil in a large skillet over medium-high heat.
Place the turkey breast in the skillet and sear for 5-7 minutes per side until the internal temperature reaches 165°F.
Remove the turkey from the skillet and let it rest on a cutting board for a few minutes.
In the same skillet, add the minced garlic and green beans with a small splash of water to help steam.
Sauté the green beans for about 5 minutes until they are bright green and tender-crisp.
Slice the turkey breast and serve it alongside the roasted sweet potatoes and garlic green beans.