Preheat the oven to 325 degrees F.
Remove the turkey from the refrigerator. Do not rinse it.
Carefully separate the skin from the meat on the breasts and legs using your fingers to lift and get under the skin. This is where the brown butter is going to go. Use a tablespoon to help reach into deeper areas where you fingers can't reach if needed.
Place a heaping tablespoon of brown butter under the skin of each breast and use your hands to smooth it out in an even layer under the skin. Repeat this process for the legs as well.
With the remaining brown butter, coat the entire exterior of the turkey with it by using your hands. Make sure to get all over the breasts, wings, legs and thighs to ensure the turkey browns.
Once coated in butter, drizzle the turkey with the olive oil and use your hands to cover the turkey evenly in the oil. This will prevent the butter from burning as the turkey cooks.
Stuff the cavity of the turkey with the quartered onions, garlic, sage, parsley and bay leaves.
Tie the turkey legs together using 100% cotton bakers string.
Add the shallots to the bottom of the pan and place the turkey in the oven. Bake for 20 minutes per pound or until the internal temperature of the turkey breast reaches 165 degrees F. *For a 14-pound turkey, it took about 4 hours and 15 minutes*.
Once the turkey reaches 165 degrees F in the breast, remove it from the oven, cover and let stand for 30 minutes. This will allow the meat to continue cooking slightly and become juicy.
Once rested, carve the turkey and arrange on a platter. Serve immediately and enjoy!