Preheat oven to 375 degrees.
Use a deep 9-inch pie plate. Melt butter in pie pan. (Ruth's Note: I melted the butter in the microwave.) Add cracker crumbs and mix thoroughly. Press crumbs into the bottom and sides of the pie pan evenly and firmly. Bake for 5 minutes at 375 degrees.
Prepare the filling by mixing eggs, milk, and marjoram together thoroughly. Use the blender for this if it had been used in Spam preparation. Add pureed Spam. (Ruth's Note: I just threw these ingredients in with the Spam and blended it all at once.)
Add cheese evenly to the baked crust, then chopped Spam, then filling. Sprinkle almonds over the top.
Bake at 375 degrees for 10 minutes. Reduce temperature to 325 degrees and bake another 15 minutes or until lightly browned and firm. (Ruth's Note: This took way longer than 15 minutes for me. It took more like 45 additional minutes.)