Directions

1. Heat oven to 425°F.
2. Heat oil in large nonstick skillet on medium-high heat. Add mushrooms; cook and stir 5 min. or until mushrooms are tender and liquid is cooked off. Cool slightly.
3. Meanwhile, prepare stuffing as directed on package, reducing water to 1 cup and butter to 2 Tbsp. Add mushrooms and cheese; mix lightly.
4. Place lamb, cut-side up, on cutting board; press to flatten. Spread with stuffing mixture. Roll up, starting at one long side. Tie closed in several places with kitchen string. Place in 13x9-inch baking dish. Pour dressing over lamb; sprinkle with rosemary.
5. Bake 1 hour 20 min. or until lamb is medium-rare doneness (150°F). Remove from oven. Cover with foil; let stand 10 to 15 min. or until medium doneness (160°F).
6. Serving Suggestion: 
Balance this special-occasion entree with smart side dishes. For example, choose a small baked potato or roasted potato wedges and a hot cooked green vegetable.
7. How to Select Lamb: 
Look for lamb that is pinkish red and has a velvety texture. Dark red meat usually indicates the meat is older.