1Heat oven to 350°F. Spray 13x9-inch (3-quart) glass baking dish with cooking spray.
2Spray 12-inch skillet with cooking spray; heat over medium-high heat. Add onion and garlic; cook about 3 minutes, stirring occasionally, until onion is crisp-tender. Stir in broth and rosemary. Heat to boiling. Stir in artichokes and spinach; reduce heat. Cover; simmer 5 minutes. Stir in pasta sauce.
3Spread 1/4 of the artichoke mixture in bottom of baking dish; top with 3 noodles. Sprinkle with 3/4 cup of the mozzarella cheese. Repeat layers twice. Spread with remaining artichoke mixture; sprinkle with remaining mozzarella cheese. Sprinkle with feta cheese.
4Cover and bake 40 minutes. Uncover and bake about 15 minutes longer or until noodles are tender and lasagna is bubbly. Let stand 10 to 15 minutes before cutting. Garnish with rosemary sprigs and lemon wedges.