Cheese and Onion Enchiladas

2 tbsp. oil
1 medium onion, chopped
1/2 tsp. Mexican Oregano
1/4 tsp. salt
1 can Enchilada sauce
2 cups shredded cheddar cheese
1/2 tsp. chili powder
8 flour tortillas

Preheat oven to 350 degrees.
Grease a 1 1/2 quart baking dish.
Cook onions sprinkled with oregano and salt in the oil over medium-high heat stirring until softened.
Remove from heat, stir into cheese. 
Stir chili powder into enchilada sauce. Dip each tortilla into mixture. 
Spoon 1/3 cup cheese-onion mixture down the center of the tortilla. Roll up and place seam-side down in the baking dish. 
Top with remaining enchilada sauce and cheese-onion mixture.
Bake until hot, 20-25 minutes.