1/2 cup plain Greek yogurt, non-fat or 2%, room temperature
1/2 cup low sodium chicken broth
1/2 tsp. dried parsley
1 tsp. dried oregano
1 tsp. dried basil
1 tsp. kosher salt, or to taste
1 tsp. crushed red pepper flakes (depending on how spicy you want it)
15 oz. canned crushed tomatoes
2 cloves garlic, minced
1/2 cup yellow onion, diced
1 pound large raw fresh or frozen shrimp, peeled and deveined
2 tsp. olive oil
2 spaghetti squash, halved lengthwise