Scalloped Potatoes – m. c. de marco

Ingredients

• 1 ¼ lbs russet potatoes, sliced 1/8" thin
• 2 T. butter
• ½ onion, diced
• 2 cloves garlic, minced
• 2 T. flour
• 1 c. milk
• ½ c. vegetable stock
• ½ tsp. mustard powder
• ⅛ tsp. thyme
• ⅛ tsp. paprika
• 1 c. grated cheese (cheddar, gruyere, or a mozzarella mix)
• salt
• pepper
• chives or other garnish (optional)