Oatmeal Cookie Jar Mix

Oatmeal Cookie Jar Mix

Your favorite chewy oatmeal cookies as a pretty, layered jar mix. Keep it in the pantry or gift it—add butter, egg, and vanilla, then bake. Easy, cozy, and endlessly customizable.

Prep: ~10 min Bake: 10–12 min @ 350°F Yield: ~18 cookies Category: Dry Mix • Cookies
Layered oatmeal cookie dry mix in a jar with baked cookies

Ingredients

Dry Cookie Mix (Jar)

  • 1 cup old-fashioned rolled oats (not quick oats)
  • ¾ cup all-purpose flour (95 g)
  • ½ tsp baking soda
  • ½ tsp ground cinnamon
  • ½ cup packed brown sugar (100 g)
  • ½ cup granulated sugar (100 g)
  • Optional: ¼ tsp fine sea salt (boosts flavor)
Jar size & layering order: Use a 1-quart (32 oz) mason jar. Layer in this order for clean stripes: oats → brown sugar (press lightly) → granulated sugar → flour + baking soda + cinnamon (whisk together first) → salt (if using). Keep airtight up to 6 months in a cool, dry cupboard.

To Bake One Batch

  • 1 jar Oatmeal Cookie Mix (above)
  • ½ cup (113 g) softened unsalted butter
  • 1 large egg, room temp
  • 1 tsp vanilla extract
  • Optional mix-ins (about ¾ cup): raisins, chocolate chips, chopped walnuts/pecans, or shredded coconut

Step-by-Step Instructions

  1. Heat oven. Preheat to 350°F / 175°C. Line 2 baking sheets with parchment.
  2. Cream butter & sugar. In a mixing bowl, beat softened butter with the sugars from the jar until light, ~1 minute. Beat in egg and vanilla.
  3. Add remaining jar mix. Stir in the flour/oats/spices just until combined. Fold in optional mix-ins; don’t overmix.
  4. Scoop. Portion ~1½ Tbsp (medium cookie scoop), spacing 2 inches apart. For thicker cookies, chill dough 20–30 minutes.
  5. Bake. 10–12 minutes, until edges are set and centers look just soft. Cool on the pan 5 minutes, then move to a rack.
Chewier cookies: Pull when the centers still look slightly underbaked and let them finish on the hot sheet.

Pro Tips, Variations & Storage

  • Spice it up: Add a pinch of nutmeg or cardamom to the jar mix.
  • Fruit & nut: Classic combo is ½ cup raisins + ¼ cup chopped walnuts.
  • Chocolate-chip oatmeal: Use ¾ cup semisweet chips; sprinkle a few on top before baking.
  • Make-ahead dough balls: Scoop and freeze on a tray; bag for up to 2 months. Bake from frozen, adding 1–2 minutes.
  • Gluten-free: Swap flour for a cup-for-cup gluten-free blend and ensure certified GF oats.
  • Dairy-free: Use plant butter or coconut oil (solid-but-soft) and a splash of non-dairy milk if dough seems dry.
  • Storage (baked): Airtight 3–4 days at room temp; freeze up to 2 months.

FAQ & Troubleshooting

  • Cookies spreading too much? Chill the dough 20–30 minutes and be sure butter is just softened, not melty.
  • Too dry/crumbly? Add 1–2 tsp milk to bring the dough together.
  • Can I use quick oats? Yes, but texture will be less chewy. Avoid instant oatmeal packets.
  • High altitude? Reduce baking soda to ¼ tsp and check 1–2 minutes early.
Yield
~18 medium cookies
Active Time
~10 minutes prep · 10–12 minutes bake
Category
Dry Mixes · Cookies
Gift it! Layer the mix in a cute jar, tie with ribbon, and add an instructions tag with the wet add-ins and bake time.