In a small bowl, whisk together eggs, salt, vanilla extract, cinnamon, and milk. This will be your batter
From a loaf, slice your bread extra thick: about 1 inch. Then slice the bread to create a pocket in the middle large enough for your SPAM.
In a pan, lay down some oil and pan fry the SPAM until a little golden brown on the outside.
Remove the slices of SPAM from the pan and insert them into each bread slice.
Dredge each bread slice in the batter and fry in a pan oiled with butter. Fry until you reach your desired consistency