Pesto without penne buttermilk balsamic

1 spaghetti squash, halved lengthwise and seeded 3 tablespoons butter, divided 1 onion, sliced 1 cup kale, stems removed and leaves chopped 4 white mushrooms,[...]

1 (1 pound) boneless beef top sirloin steak, cut 1 inch thick 2 tablespoons basil pesto 2 tablespoons fresh lemon juice 1 (16 ounce) package refrigerated[...]

2 cloves garlic, halved 1 cup torn fresh basil, lightly packed 1/3 cup grated Parmesan cheese 1/4 cup pine nuts 2 tablespoons lemon juice 1/2 teaspoon salt[...]