Ingredients

• 1 whole (5- to 6-pound) roasting chicken
• Kosher salt
• Freshly ground black pepper
• 1 large bunch fresh thyme
• 1 lemon, halved
• 1 head garlic, cut in half crosswise
• 2 tablespoons butter, melted
• 1 Spanish onion, thickly sliced
• 1 cup chicken stock
• 2 tablespoons all-purpose flour

Instructions

1. 1Heat the oven to 425 degrees. Remove the chicken giblets. Rinse the chicken inside and out. Remove any excess fat and leftover pinfeathers and pat the outside dry. Place the chicken in a roasting pan just large enough to hold it.
2. 2Liberally salt and pepper the inside of the chicken. Stuff the cavity with the bunch of thyme, both lemon halves and all the garlic. Brush the outside of the chicken with the butter and sprinkle again with salt and pepper.
3. 3Tie the legs together with kitchen string and tuck the wing tips under the body of the chicken. Scatter the onion slices around the chicken. (See Tip for cooking instructions if you'd like to also roast potatoes and carrots with the chicken.)
4. 4Roast the chicken for 1 1/2 hours, or until the juices run clear when you cut between a leg and thigh. Remove to a platter and cover with aluminum foil while you prepare the gravy.
5. 5Remove all the fat from the bottom of the roasting pan, reserving 2 tablespoons in a small cup. Add the chicken stock to the pan and cook on high heat for about 5 minutes, until reduced, scraping the bottom of the pan.
6. 6Combine the 2 tablespoons of chicken fat with the flour and add to the pan. Boil for a few minutes to cook the flour. Strain the gravy into a small saucepan and season it to taste. Keep it warm over a very low flame while you carve the chicken.
7. 7Slice the chicken onto a platter and serve immediately with the warm gravy.