How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Grandma Sieffert'S Peanut Butter Oatmeal Cookies?

You need 11 ingredients. The key ingredients include: 1 c. white sugar, 1 c. brown sugar, 1 c. shortening, 1 c. peanut butter, and more.

Is Grandma Sieffert'S Peanut Butter Oatmeal Cookies suitable as baking & desserts?

Yes, Grandma Sieffert'S Peanut Butter Oatmeal Cookies falls under the Baking & Desserts category and is a great choice for this type of meal.

How do I store leftover Grandma Sieffert'S Peanut Butter Oatmeal Cookies?

Store in an airtight container at room temperature for up to 3–5 days. For longer storage, freeze for up to 3 months — no need to refrigerate or reheat.

Grandma Sieffert'S Peanut Butter Oatmeal Cookies

Name: Grandma Sieffert'S Peanut Butter Oatmeal Cookies
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 c. white sugar; 1 c. brown sugar; 1 c. shortening; 1 c. peanut butter; 1/2 tsp. salt (optional); 2 eggs; 1/2 c. flour; 5 c. oatmeal; 2 tsp. baking soda; 2 Tbsp. hot water; 1 tsp. vanilla

Start your day right with this Grandma Sieffert'S Peanut Butter Oatmeal Cookies recipe. Made with white sugar, brown sugar, shortening and peanut butter…

This Grandma Sieffert'S Peanut Butter Oatmeal Cookies relies on simple, everyday ingredients such as white sugar, brown sugar, shortening and peanut butter. It comes together quickly and makes 4 servings, at about 997 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

Whether you're rounding off a family dinner, bringing a treat to a gathering, or simply satisfying a sweet craving, this Grandma Sieffert'S Peanut Butter Oatmeal Cookies delivers. Serve it warm or at room temperature, and add a scoop of ice cream or a spoonful of whipped cream for an extra-special finish.

Updated Jun 30, 2026

Serves 4 Baking & Desserts

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Preheat the oven fully and bake on the middle rack for the most even results.
Check for doneness a few minutes early — a toothpick in the center should come out with just a few moist crumbs.
Let it cool before slicing so it sets properly and holds its shape.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Brown sugar instead of white sugar adds a deeper, more caramel-like flavor.
A good 1:1 gluten-free flour blend works well if you need a gluten-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

Saved locally in your browser — visible only to you.

Grandma Sieffert'S Peanut Butter Oatmeal Cookies

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions