Preheat oven at 425 degrees.
Place thawed shredded beef in pan on medium heat until warm. Add 1/2 cup of BBQ sauce to beef and mix well.
Spray a large rimmed baking sheet with nonstick cooking spray and spread the tater tots in an even layer on the sheet.
Spray the tots with nonstick cooking spray and season with salt.
Bake in the preheated oven for 30 minutes, until crispy.
Remove the tots from the oven and spread the shredded beef over the top.
Top the meat with baked beans and shredded cheese.
Return to the oven to bake for 10 minutes, until cheese is melted.
Before serving, top with remaining BBQ sauce and green onions.