In a large Dutch oven, heat 2 tablespoons of olive oil over medium heat until shimmering, about 2 minutes. Once hot, add 1 chopped yellow onion and sauté for 5 minutes, stirring occasionally, until the onion is translucent. Then, stir in 3 minced garlic cloves and cook for another 1 minute, until fragrant.

Now, pour in one 10-ounce can of fire-roasted tomatoes along with 1 cup of rinsed green lentils, 2 cups of shredded leftover turkey, and 6 cups of chicken broth. Toss in 1 bay leaf and stir everything together. Bring the mixture to a gentle simmer over medium-high heat, which should take about 5 minutes.

Reduce the heat to low, partially cover the Dutch oven with the lid, and let the Turkey Lentil Soup simmer for approximately 50 minutes. Stir occasionally to prevent sticking.

After simmering, stir in 2 diced Yukon Gold potatoes, ensuring they're evenly distributed. Cover and allow the soup to simmer for an additional 10 minutes or until the potatoes are fork-tender.

Once the potatoes are cooked, discard the bay leaf. Taste and season your Turkey Lentil Soup with salt and black pepper to your preference.