Slow Cooker Scalloped Potatoes Recipe

Ingredients

• cooking spray
• 5 large russet potatoes, halved and thinly sliced
• salt and ground black pepper to taste
• 6 tablespoons butter
• 0.5 cup all-purpose flour
• 4 cups milk
• 4 tablespoons chopped garlic
• 1 (16 ounce) package shredded sharp Cheddar cheese