Preheat oven to 350 degrees.
Toss half of the olive oil with all ingredients except the green beans.
Spread mixture on parchment-or foil-lined baking sheet.
Bake at 350 degrees until onions are browned and tomatoes are very tender, about 40 minutes.
Cool mixture and place in food processor or blender.
Pulse 4-5 times, until mixture is in small chunks.
Boil or steam green beans until just tender. Remove beans from water/steam.
Using the same pan, toss beans with remainder of olive oil.
Add tomato mixture, and cook for 2 minutes or until thoroughly heated.