Preheat oven to 425 degrees.
In a large skillet over medium heat, break apart and brown ground beef. Drain and discard excess fat.
Transfer browned meat back to the skillet. Then add the cream of mushroom soup, diced tomatoes & green chilies, and finally 1/2 cup of sliced jalapeños (drain the juice from the jarred jalapeños before adding).
Spread the mixture evenly inside a 9x13 casserole dish.
Top the mixture with a single layer of cheese.
Sprinkle a few additional jalapeños over the cheese to taste.
Top with a single layer of frozen tater tots so the cheese is completely covered.
Place on the center rack of the oven to bake for 30 minutes.
The cheese will begin to bubble and the tots will start to brown indicating it is almost ready.
Pull from the oven when ready and let cool for 5-10 minutes then ENJOY!