1. Preheat your oven to 350°F (175°C).
2. In a medium skillet, heat olive oil over medium heat and sauté the chopped onion until translucent, about 5 minutes.
3. In a large mixing bowl, combine the shredded chicken, cream of chicken soup, Rotel tomatoes, sour cream, taco seasoning, and sautéed onions. Stir until well mixed.
4. In a 9×13 inch baking dish, layer half of the Doritos, slightly crushed. This was always Ouma’s favorite part, and we had so much fun crumbling them together.
5. Spread the chicken mixture evenly over the Doritos layer.
6. Top with the remaining Doritos and then sprinkle the shredded cheese evenly over the top.
7. Bake in the preheated oven for 25-30 minutes, or until the cheese is melted and bubbly.
8. Garnish with fresh cilantro before serving, if desired.

Enjoy the aroma that fills your kitchen during baking—it’s the smell of nostalgia and home. Just like the times when Mama Lou would call us to the table with a gentle, “Dinner’s ready, my darlings,” and we’d all gather around, eager to dig in.