Heat oil in a skillet. Add the pork sausage. Cook until brown.

Add the onion. Continue to cook for 2 minutes or until the onion starts to get tender.

Pour the contents of the taco seasoning into the skillet. Stir to mix it with the pork sausage.

Pour the contents of the canned diced tomato, including the liquid. Stir. Cover and let the mixture cook for 5 minutes.

Add the kidney beans. Continue to cook for 12 minutes.

Preheat oven to 350F.

Arrange half of the tortilla chips at the bottom of a baking dish. Pour half of the taco mixture over it. Arrange the remaining tortilla over the taco mixture.

Top the taco mixture with the remaining half of the tortilla and then pour the remaining taco all over the tortilla layer. Top with cheese.

Bake for 10 minutes.

Remove from the oven and then top with cilantro (coriander) and sour cream.