Preheat oven to 350°.
Melt margarine in a large nonstick skillet over medium-high heat. Add onion and 2 tablespoons pecans; cook 3 minutes until onion is tender and pecans are toasted. Remove from heat.
Combine cream cheese, 1 tablespoon milk, salt, and cumin in a large bowl. Stir in onion mixture, turkey, and cilantro. Spread about 1/3 cup turkey mixture onto tortillas; roll up and place, seam sides down, in a 13 x 9-inch baking dish coated with cooking spray.
Combine 1 1/2 cups milk, sour cream, jalapeños, and soup in a bowl. Spoon soup mixture over tortillas. Cover with foil; bake at 350° for 35 minutes. Remove foil; sprinkle with mozzarella and 1 tablespoon pecans. Bake an additional 5 minutes or until cheese melts.