Melt butter in a medium saucepan over medium heat. Add ramps and cook, stirring frequently, until softened, about 3 minutes. Add flour and cook, stirring constantly with a whisk until golden blond, about 4 minutes.
Increase heat to medium-high. Whisking constantly, slowly pour in cream. Add black pepper. Whisking frequently, bring to a boil. Reduce to a simmer and cook, whisking frequently, until thickened, about 1 minute after it reaches a boil. Remove from heat and season with salt and pepper. Serve ramp gravy over biscuits, fried chicken or chicken fried steak, or mashed potatoes.