In a microwave-safe bowl, combine 1 cup of flour, ¼ cup of salt, and 2 teaspoons cream of tartar. Use a jumbo wooden craft stick to mix the ingredients so they are evenly distributed.

Add 1 cup of water and 1 tablespoon of vegetable oil to the dry mixture. Stir until smooth and free of lumps.

Divide the dough into separate bowls if you want multiple colors. Add a few drops of food coloring to each bowl and mix until the color is evenly distributed. You can adjust the amount of food coloring to achieve the desired shade.

Microwave each bowl on high for about 1 minute. Carefully remove the bowl from the microwave (it will be hot) and stir the dough thoroughly. If the dough is still sticky, microwave it for an additional 15 - 30 seconds.

Once the dough has cooled enough to handle, knead it on a clean surface until it becomes smooth and pliable. If the dough is too sticky, you can add a little more flour. If it's too dry, add a few drops of water.

Your microwave playdough is now ready to use! Enjoy creating fun and colorful shapes with your homemade microwave playdough!