This recipe came from an estate sale. I obtained it when I purchased the family collection from the Howell Estate in Canton, Texas in 1981.
- Contributed by Catsrecipes Y-Group
- 1 pound thinly sliced cooked ham
- 8 ounces Swiss cheese cut into small cubes
- ½ cup butter softened
- ¼ cup finely chopped white onion
- 2 tablespoons poppy seeds
- 2 teaspoons prepared mustard
- 10 sandwich buns
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