Making Crawfish Queso is simple if you follow these steps:

1. Heat the Oil: In a large skillet, heat the olive oil over medium heat.
2. Sauté Onion and Garlic: Add the finely chopped onion and minced garlic. Sauté until they become aromatic and translucent, about 3-4 minutes.
3. Add Crawfish: Stir in the crawfish tails, cooking for an additional 3-4 minutes until heated through.
4. Mix in Tomatoes: Add the diced tomatoes with green chilies to the skillet and stir well.
5. Combine Cream Cheese and Heavy Cream: Lower the heat and add the softened cream cheese and heavy cream. Stir continuously until the cheeses melt and fully incorporate into the mixture.
6. Add Cheese: Gradually add the shredded Monterey Jack cheese. Stir until the cheese is completely melted and the mixture is smooth.
7. Season: Sprinkle in the Cajun seasoning, salt, and pepper. Adjust the seasoning according to your taste.
8. Serve Warm: Remove from heat and transfer the Queso into a serving bowl. Garnish with chopped fresh parsley for a pop of color.

These straightforward steps will guide you in creating this delicious Crawfish Queso that will impress everyone.