Sauté diced onions and bell peppers in oil over medium-high heat until softened.
Add ground beef and cook until browned, breaking it into large chunks as it cooks.
Add corn, condensed mushroom soup, and minced garlic, stir to combine.
Add broth and milk and simmer for 2-3 minutes then turn off heat.
Sprinkle on an even layer of cheese.
Top with tater tots, starting at the outer edge of the pan and working your way toward the center. Bake at 425 degrees for 25-30 minutes or until the top is golden brown.
Notes
If your family doesn’t like red bell peppers, substitute with celery—it’s delicious in this dish!
If the tater tots aren’t browned to your liking, broil the casserole for 2–3 minutes.