Tomato Basil Bisque soup

Ingredients
1 leek stalk, sliced thinly
1 tablespoon olive oil
1 28-ounce can diced tomatoes
1/3 cup fresh chopped basil
1/3 cup full-fat coconut milk
*optional: 1 tablespoon honey or agave
1 pound ground beef
2 teaspoons garlic powder
3 teaspoons dried oregano