Grease a baking dish with olive oil and set it aside. Preheat your oven to 360°F.
Place beef, onion powder, garlic powder, mustard, tomato paste, pepper, and salt in a bowl. Stir well.
Heat olive oil in a skillet. Add the beef mixture and cook for about 10 minutes.
Add the cooked beef mixture to your baking dish. Spread green beans over the beef.
In a bowl, beat eggs. Add cream and salt. Pour this mixture over the baking dish. Top with cheddar.
Bake for 20-30 minutes, until the cheese, is golden brown. Serve, and enjoy!