Baked Beef and Veggie Casserole with Cheddar Mashed Potato Crust

Preheat the oven to 350°F (175°C). Grease a 2-quart casserole dish with cooking spray.

In a large skillet, heat oil over medium heat. Cook and stir onion until translucent, about 5 minutes.

Add ground beef and basil. Cook and stir until beef is crumbly and browned, about 5 minutes.

Mix in green beans, tomatoes, and garlic. Cook until beans are slightly softened, around 5 more minutes.

Transfer the mixture to the prepared casserole dish.

In a medium bowl, combine mashed potatoes, water, and beaten egg. Mix well and spread evenly over the beef mixture.

Bake in the preheated oven for 15 to 20 minutes until the potato crust starts to brown on top.

Sprinkle with Cheddar cheese and continue baking for another 5 minutes or until the cheese is fully melted.

Serve and enjoy!