Cook bacon in a medium sauté pan until crispy then remove and crumble, reserving 1 Tbsp of the drippings in the pan.
Add onion to the pan with bacon drippings and sauté until translucent. Add garlic, stir then remove from heat. Toss with bacon crumbles and set aside.
Melt butter in a medium saucepan. Whisk in flour for 1 minute then slowly whisk in the milk until there are no lumps. Simmer for approximately 5 minutes until thickened. NOTE: We strongly recommend you weigh your einkorn flour, if possible, for better accuracy. If you don’t have a scale, fluff the flour with a fork before you measure it in a cup.
Stir in salt, pepper and thyme then remove from heat. Spread a layer of sweet potato slices evenly in a 9" x 13" pan, overlapping slightly. Season with salt and pepper then spoon ⅓ of the bacon mixture over the potatoes. Pour ⅓ of the milk mixture on top and sprinkle with ⅓ of the cheese.
Repeat steps until the potatoes and bacon are gone. Finish with the milk mixture and cheese.
Bake 35–45 minutes, or until bubbly. Enjoy!
One Last Thing
If you like it hot, add a dash of red pepper flakes to the mix!