Lightly grease or butter a round (9') pan or 9x13" casserole dish. I use a thin layer of coconut oil
Bake or fry bacon according to your preference. Remove from pan and layer on paper towel lined plate to cool. After cooled, dice into small pieces.
Remove some bacon grease from pan (do not remove all). Sautee peppers and onions in bacon grease until tender. If you baked your bacon in the oven, melt butter in frying pan and sautee peppers and onions in butter. Remove from heat and let cool slightly.
In separate bowl, whip eggs and yogurt until creamy.
Using a mandolin slicer, slice sweet potatoes into thin (1/4 in) slices and layer on bottom of prepared pan. Do not slice too thick or they will still be crunchy. May need more or less sweet potatoes depending on pan size. Be sure to cover entire bottom slightly overlapping the edges of each slice.
Layer cheese on top of sweet potatoes.
Pour eggs, sauteed peppers and onions, and bacon on top of sweet potatoes.
Season with salt and pepper to taste
Bake at 375 for 35-40 min or until middle is set. Time will need adjusted depending on pan size.