Stuffed Chayote Relleno on the Grill Recipe

Name: Stuffed Chayote Relleno on the Grill Recipe
Ingredients: 3 to 4 medium chayote squash (halved); 1 pound of ground beef (or ground meat of choice); 3 green onions (chopped, white and green parts separated); 1 cup shredded sharp cheddar (or Colby jack, queso fresco, or Monterey jack); 3/4 cup or 180 mL cooked brown rice or quinoa; 1/4 cup or 60 mL chicken or vegetable stock; 1 clove garlic (minced); 1 teaspoon or 5 mL mild chili powder; 1/2 teaspoon or 2.5 mL cumin powder; 1/2 teaspoon or 2.5 mL salt; 1/4 teaspoon or 1.75 black pepper; olive oil