This is a low carb recipe adapted from Atkins and it is appropriate for any phase of the Atkins program, including induction. It is quite flavorful.
Remove casings from sausage and place in a heated 12" nonstick, ovenproof skillet. Cook the sausage breaking it apart with a wooden spatula or spoon. Once cooked through, remove from pan and set aside.
Place butter in a the skillet over medium-high heat. Add squash in a single layer, single with freshly ground pepper and sauté for about 4 minutes, then turn the slices and cook for 4 more minutes then stir in sage. Cook until tender and browned in spots, 1–2 minutes more.
Meanwhile, arrange oven rack 6 inches from heat source; heat broiler.
Whisk eggs, water and salt together in a bowl.
Pour eggs over squash. Reduce heat to medium-low, cover and cook until set on bottom and edges but top is still loose, about 3 minutes. Uncover, and sprinkle cheese evenly over top.
Broil frittata until just set, about 1 minute. Cut in wedges to serve.
**Serves 4 small to medium servings or 2 larger servings.