Pesto Spaghetti Squash

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, sliced 1 teaspoon garlic salt 1 teaspoon Italian seasoning 1 teaspoon red pepper flakes 1 teaspoon olive oil 2…

Kale Pesto

¼- ½ cup chopped walnuts •1 ½ -2 teaspoons salt •½ pound lacinato (Tuscan) kale, stems removed, coarsely chopped (1 medium bunch should do) •2 cloves garlic, minced •½ cup olive oil •½ tsp old bay seasoning •½ cup grated Parmigiano-Reggiano •Ground black pepper…