In covered blender jar, blend bread piece by piece at low speed until crumbed. Set aside. Blend mayonnaise, eggs, onion, garlic, lemon juice and seasonings at high speed until smooth. In a 1 1/2 quart casserole, layer half of each kind of bean and half the sauce; repeat. Sprinkle crumbs over all. Bake at 350 F for 35 minutes until brown and bubbly. Serves 8.