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.
Meanwhile, prepare stuffing as directed on package, reducing water to 1 cup and butter to 2 Tbsp. Add mushrooms and cheese; mix lightly.
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.
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).
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.
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.
Calories From Fat
% Daily Value*
Total Fat 14g
Saturated Fat 5g
Trans Fat 0g
Total Carbohydrates 8g
Dietary Fiber 1g
* Percent Daily Values are based on a 2,000 calorie diet.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.