Source: Oldways
Medi For All Tips:
A bell pepper (any color) can be substituted for Poblano pepper.
You can also use soft corn tortillas if you prefer, for more of a taco-like dish.
Use homemade refried beans if they are something you like to have on hand, as they freeze well. Try this recipe from Budget Bytes, or use a recipe you like, making sure you adapt as needed to follow Medi For All principles (e.g., switch cooking fat to olive oil, etc.)