Slow-Cooker Scalloped Potatoes - Lisa G Cooks

Ingredients

• 2 Cups milk ((I used 2%))
• 2 tbsp whole wheat flour
• 1 tsp dijon mustard
• 1/2 tsp salt (, plus more)
• 1/4 tsp pepper (, plus more)
• 5-6 Sprigs fresh thyme
• 3 Cloves garlic (, crushed)
• 6 Medium russet potatoes, skin on (, cleaned and sliced thinly (1/8 inch))
• 1 Small onion, (, very thinly sliced)
• 1/2 Cup Grated old cheddar