Make-Ahead Gravy

Melt butter in a large saucepan over medium-high heat. Cook onion, celery and thyme until vegetables are very soft and golden brown, about 5 minutes.

Stir in flour and cook until just beginning to brown, stirring constantly, about 3 minutes.

Gradually stir in 2 cups broth. Cook, stirring frequently with a whisk, until thickened and smooth, about 3 minutes; cool. Refrigerate gravy base and remaining 2 cups broth up to 2 days before serving.

When turkey is finished roasting, remove from pan to let rest. Skim fat from pan drippings. Add turkey pan drippings to refrigerated gravy base in a medium saucepan; heat over medium heat, stirring frequently. Add reserved broth 1/4 cup at a time until desired thickness. Simmer until heated through and serve.