In a sauce pan over medium heat, melt butter. Then add remaining sauce ingredients and stir to combine. Reduce to medium-low and let simmer while arranging the sheet pan.
Cover a large sheet pan with parchment paper. Arrange chicken thighs evenly spaced around sheet pan. Fill in voids with carrots, onions and potatoes. (Entire sheet pan should be covered).
Pour sauce over sheet pan, paying extra attention to pieces of chicken. Place in oven and bake for 45 minutes. Let cook for at least 5 minutes before serving.
Keyword carrots, Chicken, chicken thighs, dijon, maple syrup, onions, sheet pan dinner