How do I report Misc income of $1100 without a 1099?

It depends on what kind of income.  If it is income from self-employment, you can enter that in your Schedule C. If it was a different kind of income, please give us more details so we can better assist. 

If you received  self-employment income that was not included on a Form 1099, you may enter that in the Add Income section of the Schedule C. Cash App transactions, cash, checks, and other methods of payment can be entered here. 

1. Click on Wages and Income on the left menu
2. Scroll down to Self-Employment and click on Show More
3. Click on Start or Revisit for Self-employment income and expenses
4. When you get to the Income and Expenses section
5. Click on the Add Income button 
6. Select Other self-employed income, includes cash and checks and Continue.  
7. Enter a Description, such as Cash App, and the Amount.