While bread is toasting, combine both olives, capers and garlic in the bowl of a small food processor
Pulse half a dozen times until chunky (keep it rough chopped, not mushy)
Transfer olive mixture to a bowl and add onions, oregano, parsley, red wine vinegar and olive oil. Combines and season with salt and pepper to taste
Remove toasted bread slices from oven/toaster when ready and let cool briefly
When cool enough to handle, spread beet green pesto on each slice
Top each slice with Olive and Caper mix
Sprinkle a bit of Parmesan cheese and several grape tomato slices one each Bruschetta for garnish
Serve while bread is still warm
Notes
I add the onions after the olives have been pulsed in the food processor. I think that the food processor would over process the onions. The result would be very strong onions that would dominate. Use any pesto that you have as a spread, but this is a great use for the Beet Green Pesto Bread slices can be as large or small as you want depending on what you are using the Bruschetta for. Small baguette rounds are great for a party appetizer. Larger slices make a nice light lunch.