INGREDIENTS
2 tbsp
butter, plus more for greasing pan
1
+ ⅓ pounds ground sirloin
1/2 cup
diced onion
2 cloves
garlic, minced
1 11 ounce can
diced tomatoes & green chiles
2/3 cup
tortilla chip crumbs (whiz tortilla chips in a food processor)
2
eggs, beaten
1 tsp
Worcestershire
1
+ ⅓ cups sharp cheddar cheese, shredded
1 tsp
oregano, crushed between fingertips (preferably Mexican)
1 tsp
chili powder
coarse salt and fresh black pepper
4
(10" or 12") flour tortillas
topping:
1 tbsp
butter
1 tbsp
olive oil
1
large onion, thinly sliced
1
ripe Hass avocado, cubed
fresh chopped cilantro or parsley (optional)
sour cream, for serving (optional)