Cut a small slice off the bottom of each squash half so it rests flat. Brush the insides with 1 tsp oil, sprinkle with 1/4 tsp each salt and pepper. Place in a 9x13 in microwave-safe dish. Cover with plastic wrap and microwave on high until the squash is fork tender. About 10 minutes

Meanwhile, heat 1 tbsp oil in a large skillet over medium heat. Add onion, cook stirring until starting to brown, 2-3 minutes. Add garlic, cook, stirring for about 1. I ute. Stir in water, tomato paste and remaining 1/4 tsp each salt and pepper. Stir in chard, cover and cook until tender. Stir in white beans and olives, cook until heated through. Remove from heat

Position rack in center of oven, preheat broiler

Combine breadcrumbs, Parmesan and remaining oil in a bowl. Fill each squash half with about 1 cup of chard mixture. Place in a baking dish and sprinkle with breadcrumb mixture. Broil 1-2 minutes