Slice the onion thinly and remove stems from cherry tomatoes.

Boil a pot of water, add salt (not listed in ingredients) and spaghetti. Cook for 1 minute less than the package instructions.

Heat olive oil in a frying pan over medium heat. Add onion and sauté until softened. Add cherry tomatoes, beef stew, and seasonings. Crush the beef chunks while mixing and heat until bubbling.

Add the cooked spaghetti to the sauce and mix well.