Get all ingredients in place, as this recipe is made quickly. Chop shallots. Prepare fresh garlic. Chop sun dried tomatoes. Measure out wine, cream. Wash and dry spinach (I use a pre-washed).
Pound boneless chicken breasts to about 1/4 inch. Cut in half.
Melt 1 tablespoon of butter in pan with 2 tablespoon of olive oil. You can use a dutch oven, a frying pan, or enameled pan as I did. Do not use a cast iron pan.
Saute chicken on medium heat. Add more oil if needed. You may have to fry chicken in two rotations, as you want to give chicken room in pan. Sautè about 4 minutes each side. Remove from pan.
Add remaining butter to pan. Add chopped shallots and soften. Add garlic and sautè for a minute.
Have a lid at the ready and add in wine. Sometimes when wine hits fat it will shoot straight up, so a lid is important for about a minute.
Add in heavy cream , sun dried tomatoes and optional red chili flakes. Add in pecorino or parmesan cheese.
Add in spinach leaves. Add chicken back in and turn off heat.
Sprinkle with chopped parsley.
Season to taste with salt and pepper.