Preheat oven to 350 degrees F.

Slice apples and chayotes to about 1/4inch thick and place in an over-safe baking dish with a lid . Combine lemon juice, half the erythritol and stevia in a small bowl; pour over apples. Cover, transfer to oven and bake 30 minutes.

Remove apple mixture from oven and stir well to coat. Adjust sweetness if necessary.

Increase oven to 375 degrees F.

Melt butter. Combine with remaining erythritol and vanilla into a small mixing bowl. Mix in the almond flour, chopped pecans, flaxmeal, cinnamon and nutmeg to make a crumbly meal.

Pour streusel over the apple-chayote mixture and bake uncovered 45 minutes.

Serve.

NOTE: Original recipe yields 10 servings.