Cook the elbow macaroni according to package instructions; drain and set aside.
In a large skillet, brown the ground beef or turkey over medium heat.
Drain excess fat from the meat, if necessary.
Stir in the taco seasoning and follow package instructions.
Add the salsa and milk to the skillet, mixing well.
Incorporate the cooked macaroni into the skillet and stir to combine.
Add the shredded cheddar cheese, stirring until melted.
Mix in the sour cream until creamy and well combined.
Season with salt and pepper to taste.
Serve hot, garnished with chopped green onions and jalapeños.