1. Preheat oven to 400°.
2. Combine squash and oil in a large bowl; toss well. Arrange squash mixture in a single layer on a baking sheet coated with cooking spray. Bake at 400° for 30 minutes or until squash is tender.
3. Cook pasta 7 minutes or until almost al dente, omitting salt and fat. Add kale to pan during last 2 minutes of cooking. Drain pasta mixture.
4. Cook bacon in a large nonstick skillet over medium heat until crisp. Remove bacon from pan; crumble. Add onion to drippings in pan; cook 6 minutes, stirring occasionally. Add 1/2 teaspoon salt and garlic; cook 1 minute, stirring occasionally.
5. Bring 1 3/4 cups broth to a boil in a small saucepan. Combine remaining 1/4 cup broth and flour in a small bowl, stirring with a whisk. Add flour mixture, remaining 1/2 teaspoon salt, and pepper to broth. Cook 2 minutes or until slightly thickened. Remove from heat; stir in crème fraîche.
6. Combine squash, pasta mixture, bacon, onion mixture, and sauce in a large bowl; toss gently. Place pasta mixture in a 13 x 9-inch glass or ceramic baking dish coated with cooking spray; sprinkle evenly with cheese. Bake at 400° for 25 minutes or until bubbly and slightly browned.
MyRecipes is working with Let's Move!, the Partnership for a Healthier America, and USDA's MyPlate to give anyone looking for healthier options access to a trove of recipes that will help them create healthy, tasty plates. For more information about creating a healthy plate, visit www.choosemyplate.gov.