This is a quick and easy bisquick substitute! Simply put, baking mix is flour with a leveling agent and fat of some kind mixed together. Here is a recipe I found and modified for my Turkey Sausage Cheddar Balls.
Dough Blender OR Potato Masher OR Fork
Ingredients: (This is a 1:1 ratio for substitution)
1 Cup Flour
1 1/2 TSP Baking Powder
1/4 TSP (pinch) Salt
1 TBSP Chilled Butter
Mix all dry ingredients, cut in butter with your chosen tool until fully incorporated and the mix looks like corn meal (about 3-5 minutes).
For the Turkey Sausage Cheddar Balls I used 2 1/2 cups of flour & rounded up to an even 4 TSP of Baking Powder.