Tear bread into pieces then add to a food processor and pulse until you have coarse breadcrumbs. Set aside.
Melt butter in a large skillet over medium heat. Once butter starts to foam, swirl the skillet until the butter turns golden brown, 2-3 minutes. Add garlic, then saute for 30 seconds. Add breadcrumbs and fresh sage then season with salt and saute until breadcrumbs are crispy and browned, 10-12 minutes, stirring frequently. Transfer breadcrumbs to a plate then set aside.
Return skillet to stove then turn heat up just a touch and add extra virgin olive oil. Add green beans, season with salt and pepper, then saute until the green beans begin to blister, 5 minutes. Add water then place a lid on top of the skillet, turn heat back down to medium, and then saute until green beans are tender, 5-7 minutes, shaking the skillet occasionally.
Plate green beans then top with crunchy breadcrumbs and serve.