For the Roasted Garlic Mashed Potatoes:
Heat oven to 425F.
Drizzle garlic with EVOO and season with salt and pepper. Set the rosemary sprig over the exposed end then wrap tightly in foil. Roast 45 minutes or until lightly golden and very soft.
When the garlic is ready, place potatoes in water, cover and bring to boil. Remove cover when boiling, season water with salt and cook potatoes to tender. Drain and return to hot pot.
Mash potatoes with roasted garlic cloves, butter, stock, cream and cheese; season with salt and pepper to taste.
To keep warm, place mashed potatoes in a small pot and cover. Set the pot into a larger pan with half an inch of simmering water, adding more water as necessary until ready to serve.
For the Green Beans with Shallots:
Bring a few inches of water to a boil; salt water and add beans. Cook 3-4 minutes then cold shock and drain; reserve.
In a large, deep skillet, heat EVOO over medium heat. Melt butter into oil, add shallots and season with salt and pepper. Lightly caramelize the shallots, stirring occasionally for about 20 minutes. Add stock and stir to combine, turn off heat and add beans. Cook to heat through.
For the Filets with Marsala Mushrooms:
Bring steaks to room temperature and heat a cast-iron griddle or grill pan to medium-high heat.
Heat a skillet with a drizzle of EVOO over medium to medium-high heat. Add butter and let foam, add mushrooms and brown 10-12 minutes. Season with salt and pepper, add shallots, thyme and flour; stir 2 minutes. Add Marsala and reduce by half; add stock and simmer over low heat.
Drizzle meat with EVOO and season with salt and pepper. Cook 8 minutes, turning once, for medium rare; 12 minutes for medium to medium-well. Top with Marsala mushroom sauce and serve.