Prep the toppings, dice the Spanish onion and avocado, chop the lettuce, shred the Asadero cheese, slice the jalapeños peppers, and cut the heirloom cherry tomatoes in half. Toppings can be prepped and placed in the fridge to chill.
Using a griddle over med heat, break apart the slider buns and brush them with extra olive oil. When the griddle is hot toast the slider buns until golden brown. Top the toasted slider buns with shredded Asadero cheese. 
In a large skillet over med/high heat add two tablespoons of extra virgin olive oil, when the oil is hot brown the lean hamburger meat, strain off any excess fat, and return the meat to the skillet, add taco seasoning and salsa. Mix well.
Add seasoned meat to cheese topped slider buns, add onion, lettuce,  jalapeños peppers, tomatoes, avocado, and more cheese.
Serve.