3 lamb burgers spices mint sauce Recipes

boneless lamb shoulder, trimmed and cut into 1-inch pieces, olive oil, divided, chopped onion, chopped shallots, minced garlic, divided, ground cumin, ground coriander, ground cardamom, ground mustard, ground turmeric, ground red pepper, grated whole nutmeg, chopped fresh mint, divided, kosher salt, divided, red bell peppers, low-fat greek-style plain yogurt, fresh lemon juice, freshly ground black pepper, divided, hamburger buns, toasted, torn radicchio

olive oil, turkish bread, cut into 4 portions, each split in half, hummus, baby spinach, roasted red capsicums, sliced thickly (roasted peppers), red onion, sliced thinly, chili sauce (optional), fresh breadcrumb, milk, lamb mince, brown onion, coarsely grated, chopped fresh mint, garlic clove, crushed, ground cumin