Stuffed Tomatoes and Mushrooms

I made these last night for dinner. We needed to eat, and so I just sort of made this up on the spot. It turned out well, though I undersalted the filling (I always end up undersalting things).

Stuffed Tomatoes and Mushrooms

Ingredients:

3 medium round tomatoes
3 large mushrooms
325 g ground beef
1/2 small onion chopped
1 clove garlic minced
1 T dried parsley
1 T dried basil
1 T dried oregano
salt
pepper
1 egg
1 c tomato juice (something tasty enough you'd drink it)
60 g fresh mozzarella cheese, sliced/shredded

Method:

Wash the mushrooms and the tomatoes. Slice their tops off and remove the insides of the tomatoes (a grapefruit spoon is awesome for this) and reserve for some other application (soup, salads, whatever). Remove the mushroom stems, chop them (just the stems) and place the pieces in a bowl. Arrange the tomatoes and mushrooms in a shallow baking pan or dish. Sprinkle them with salt and pepper. In the bowl with the mushroom pieces, prepare the filling. Add to the mushrooms the ground beef, garlic, onion, egg (beaten), herbs and generous amounts of salt and pepper. Mix thoroughly. Stuff an equal amount of the mixture into each tomato and mushroom cap. You can stuff them with less and make more mushrooms/tomatoes if you want. Pour the tomato juice over everything. Bake at 350 degrees for 30 minutes. Cover each tomato/mushroom with cheese (you can use a different kind if you like) and bake for an additional 5-10 minutes.

Notes and Serving Suggestions: I cooked mine for 10 minutes more than is listed here, and they were just the tiniest bit dry. I think that the times I've written here are better. We ate this with a big green salad (romaine, olives stuffed with garlic, onion, apple cider vinegar dressing) and spaghetti. You could use bell peppers, too, or some other vegetable. If you want to use less meat, add some rice to the mixture. For a vegetarian stuffing, I'd use rice, mushrooms, onion and maybe some kidney beans.

I know that tomatoes with spaghetti sounds very Italian, but I've never seen Italian stuffed tomatoes. I have seen them in Russian and Balkan cuisine, and in French, too. However, I have seen Italian stuffed mushrooms. I dunno. I'm putting them in the "Russian", "Italian", and "French" categories.