Cheesy Scalloped Potatoes and Bacon

DIRECTIONS

• Cook bacon until done, but not crispy. Set aside on paper towels to absorb grease and pat dry. Cut into bite sized pieces when cool.
• Wash potatoes. Bring a large saucepan of water to a boil. Add salt to the boiling water, then add the potatoes. Cook for 10-15 minutes in boiling water (the potatoes will finish cooking in the oven). Set aside and allow to cool. Once you're able to work with the half-cooked potatoes, slice them into 1/2" pieces.
• In saucepan, melt butter. Saute the onion slices until just tender; remove from pan and set aside. Making sure you still have enough butter in your pan, stir in flour and milk, whisking until smooth. Cook over low heat, stirring/whisking constantly for 1 minute. Add cheese and continue to stir until cheese melts. Stir in 3/4 teaspoon salt and 1/8 teaspoon pepper. Mix in bacon.
• In a buttered 9x13 quart casserole, layer potatoes, onion, and cheese mixture. Continue to add layers until about one inch from the top, finishing off the top layer with the cheese mixture.
• Bake in a preheated 350°F oven, covered, for 45 minutes. Take the cover off of the casserole dish, sprinkle with green onions, and bake for another 5 minutes uncovered. Sprinkle lightly with garlic salt before serving, if desired.