Grease 15 1/2 x 10 1/2 x 1" pan.
Line with waxed paper, grease lightly and flour. Heat butter and remove from heat. Stir in flour.
Cook over low heat, stirring til smooth and bubbly. Remove from heat, stir in milk. Heat to boiling, stir constantly.
Boil and stir 1 minute. Remove from heat, beat in egg yolks, one at a time. Stir in salt, red pepper, chives, and cheese. Cool at room temp, cover mix to prevent film.
Heat oven 350F. Beat in whites with cream of tartar, sitff not dry. Fold in 1/4 whites into mixture, fold in remaining whites.
Bake until puffed and golden brown 35-45 minutes. Immediately loosen souffle from edges of pan, invert on cloth covered cooking rack.
Spread with filling. Roll from narrow end cut desired slices when cool.
Cook and stir green onions in butter til tender. Stir in remaining ingredients. Heat until hot.