Slow Cooker Guinness Irish Beef Stew

lean beef stew meat cut in 1" cubes (I buy the pre cut package from the butcher)

white all purpose flour

carrots, chopped (about 4 large, will yield 3 cups)

yukon gold potatoes, chopped (about 4 medium size, will yield 3 cups)

large yellow onions, chopped

garlic, grated of finely minced

tomato paste

bottle Guinness Draught beer

chicken stock, divided

bay leaves

salt and pepper

olive oil

micro greens for garnish (optional, or could use chopped parsley)