Spaghetti Sauce

This is my mom's recipe and it's my absolute favorite spaghetti sauce!

1 lb ground beef
1/2 onion, chopped
mushrooms, sliced
1 (15 oz.) can tomato sauce
1 tsp. basil
1 tsp. oregano
garlic powder (to taste)
dash of thyme

Cook onions in a little olive oil until soft or translucent. Add mushrooms and saute until soft. Add ground beef and brown. Pour in the tomato sauce and add the herbs; mix well. Let simmer for 5 to 10 minutes. Serve over spaghetti or angel hair pasta.