In a cast iron skillet over medium heat, add the oil and the onions. Stir the onions around in the oil and then ush to the side of the skillet.
1 and ½ tablespoon Canola oil, 1 Medium Onion
Spray both sides of each tortilla with cooking spray and place, one at a time, in center of skillet just until warm, flip, then remove to a plate.
8 Corn Tortillas, Canola oil cooking spray
When the tortillas are finished, move the onions back around the pan and continue to until they have softened.
Add the garlic, spices, sugar and salt, and cook for 20 seconds, then add the tomato sauce and water.
2 Cloves Garlic, 3 Tbsp Chili Powder, 2 tsp Cumin, 2 tsp Coriander, 2 tsp Granulated Sugar, ½ tsp Table Salt, 16 oz Canned Tomato Sauce, ¾ Cup Water
Stir well and continue cooking the sauce until it is reduced slightly, about 5 minutes.
Remove the sauce from skillet to a measuring cup or bowl using a large spoon or ladle, leaving behind just a enough sauce to cover the bottom of the pan.