Soak the bread in the milk for 2 to 3 minutes. Add in the beef and seasoning, mix well with your hands. Form into equal oval shaped pucks.
Heat a non-stick pan on medium heat. Once hot, add the oil. Sauté the mushrooms, garlic, shallot, thyme, and sage until the mushrooms start to soften. Push the contents of the pan to one side. In the open side of the pan, sear the Salisbury steaks on both sides to get a crusty char.
Stir in the fire-roasted tomatoes and broth. Bring to a simmer, then add the green beans. Cover with a lid and low simmer until the green beans are tender.
Remove the lid. Season with salt and pepper to taste.