Preheat oven to 350 °F.

Coat 4 individual soufflé dishes with 1 tsp vegetable oil.

Make 3 to 4 slits in sweet potatoes; cook in microwave until just soft.

When sweet potatoes are cool enough to handle, peel, cut into chunks, and puree in food processor.

Heat remaining vegetable oil in sauce pan, and sauté kale about 5 minutes.

In a medium sauce pan, boil water and milk, add grits and sweet potatoes; cook for 5 minutes. Remove from heat; stir in sautéed kale.

Divide grits mixture evenly among 4 soufflé dishes (or place all in casserole dish).

Make 4 depressions in the grits mixture with the back of a large spoon. Carefully break one egg into each hollow.