Put onion, mushrooms and butter into frying pan. Saute until soft and onions are clear.
Add cream cheese in chunks. Add next 4 ingredients. Stir until cheese melts. Let stand until completely cool.
remove crust from bread. Roll each slice flat with rolling pin. Spread mushroom mixture on each slice and roll up as for jelly roll. Brush with melted butter. Place on tray to freeze. Store in plastic bag.
To serve, cut each roll into 3 pieces. Arrange on ungreased baking sheet and bake in 400F oven for 10-15 minutes until toasted and hot.
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