In a skillet, roast tomatillos, 1/2 onion, 3 cloves garlic until tomatillo is soft. Blend and set aside.
Bring boiling pot of water to a boil. Add olive oil & salt. Add shells when boiling. Reduce heat to medium.
Brown ground beef in skillet. Sauté onion, tomatoes, peppers and garlic in wok.
Once shells are al dente, add shells to ground beef – veggie mix. Add broth, tomato sauce, tomatillo blend and all seasonings.
Cook for 30 minutes and serve.