Heat the Ninja Woodfire Outdoor Grill to high heat while you make the pesto. In a blender, we’re using the Ninja Twisti High-Speed Blender Duo, pulse together the almonds and garlic. Add the tomatoes, basil, a heavy pinch of salt, a pinch of red pepper flake and blend until almost smooth. Stream in the olive oil and blend until smooth. Move the pesto to a bowl and fold in the parmesan cheese.