Place bread in a food processor; pulse 10 times or until coarse crumbs form to measure 1 cup.
Preheat oven to 400°.
Drain beans in a colander over a bowl, reserving liquid. Add enough water to liquid to measure 1 cup. Combine beans, thyme, sage, pepper, and 1 garlic clove.
Heat 1 tablespoon oil in a large nonstick skillet over medium-high heat. Add 3 garlic cloves, leek, rosemary, salt, and artichokes; sauté 4 minutes. Stir in bean liquid mixture. Cover, reduce heat, and simmer 10 minutes, stirring occasionally. Remove from heat. Spread half of bean mixture in an 11 x 7-inch baking dish coated with cooking spray, and top with half of goat cheese. Spread artichoke mixture over goat cheese; top with remaining bean mixture and remaining goat cheese. Combine the breadcrumbs and 1 tablespoon oil; sprinkle over goat cheese. Bake at 400° for 25 minutes or until lightly browned.