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										Heat oil in a large pan over medium heat. 
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										Place 3 pounds of lean ground beef, in a large bowl. 
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										Add 2 eggs, and next 9 ingredients through pepper. 
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										Mix all together, but do not over mix. 
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										Form eight (8) ounce patties. 
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										In batches, brown patties on medium-high heat for about 2 - 3 minutes on each side. 
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										Pour 1 cup in bottom of slow cooker. 
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										Gently place hamburger patties in a single layer in bottom of slow cooker, overlapping as needed. Place sliced onions and another cup of enchilada sauce on top of patties. 
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										Cook on lowe for 5 hours. 
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										When ready to serve slice rolls in half. 
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										Heat oven to broil. 
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										Lightly butter cut sides of buns and toast for 2-3 minutes. 
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										Remove from oven and set aside top roll. 
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										Place shredded lettuce on bottom roll. 
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										Spread guacamole on cut side of top roll. 
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										Top lettuce with 1 patty, cooked onions and some sauce. 
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										Layer with pepper-jack cheese slices and place under broiler for another two minutes until cheese has melted. 
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										Spoon fresh salsa or pico de gallo on top of cheese. 
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										Add fresh avocado slices and top with roll.