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Preheat oven to 375 degrees. Wring all the water out of the spinach. Put all the ingredients into a large bowl.  Adjust the garlic and pepper to your preference.
															
									 
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Mix together with your hands, being sure to break up the spinach so you do not get large clumps of spinach that could cause the burgers to fall apart.
															
									 
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Do not over work the meat. Form into about 6 equal size burgers and place them on a greased broiler pan.
															
									 
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Put in the center of the oven and bake until center of a burger is at least 165 degrees about 30-45 minutes.  Let them rest for about 5 minutes before you serve.