Grilled Mushrooms with Garlicky Greens & Toasted Crumbs - Another Pantry

Ingredients

• 4 large, open cap portobello mushrooms
• 4 tablespoon extra-virgin olive oil
• 2 small garlic cloves, thinly sliced
• 200g (7oz) chard or spinach, washed, coarser stalks removed, roughly chopped
• a handful of coarse breadcrumbs
• sea salt and freshly ground black pepper